diff --git a/data/tree.json b/data/tree.json
index 4723fa02060a7a20fa03582268be445ae23467a2..563c5240591a91622732915b253293d566cd05de 100644
--- a/data/tree.json
+++ b/data/tree.json
@@ -32,7 +32,9 @@
                           "概念"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -49,12 +51,16 @@
                           "概念"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -76,7 +82,9 @@
                           "安装"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -94,12 +102,16 @@
                           "登录"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -129,7 +141,9 @@
                           "删除"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -144,7 +158,9 @@
                           "表"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -162,7 +178,9 @@
                           "编码"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -179,12 +197,16 @@
                           "存储引擎"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -210,7 +232,9 @@
                           "数值类型"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -232,7 +256,9 @@
                           "时间类型"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -253,7 +279,9 @@
                           "字符串"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -272,12 +300,16 @@
                           "字符串"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -299,7 +331,9 @@
                           "插入"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -315,7 +349,9 @@
                           "修改"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -331,12 +367,16 @@
                           "删除"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -358,7 +398,9 @@
                           "select"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -376,7 +418,9 @@
                           "where"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -393,7 +437,9 @@
                           "运算符"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
                     }
                   },
                   {
@@ -412,17 +458,23 @@
                           "函数"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
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+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             }
           ],
           "keywords_must": [],
-          "keywords_forbid": []
+          "keywords_forbid": [],
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+          "subtree": ""
         }
       },
       {
@@ -451,7 +503,9 @@
                           "表"
                         ]
                       ],
-                      "keywords_forbid": []
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                     }
                   },
                   {
@@ -468,7 +522,9 @@
                           "视图"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -488,7 +544,9 @@
                           "存储过程",
                           "函数"
                         ]
-                      ]
+                      ],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -508,7 +566,9 @@
                           "约束"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
                     }
                   },
                   {
@@ -525,7 +585,9 @@
                           "触发器"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
                     }
                   },
                   {
@@ -543,12 +605,16 @@
                           "存储引擎"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
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+                "subtree": ""
               }
             },
             {
@@ -570,7 +636,9 @@
                           "别名"
                         ]
                       ],
-                      "keywords_forbid": []
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+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -586,7 +654,9 @@
                           "between"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -605,7 +675,9 @@
                           "case"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
                     }
                   },
                   {
@@ -621,7 +693,9 @@
                           "distinct"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
                     }
                   },
                   {
@@ -638,7 +712,9 @@
                           "order by"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -654,7 +730,9 @@
                           "union"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -671,7 +749,9 @@
                           "正则表达式"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   },
                   {
@@ -689,12 +769,16 @@
                           "分页"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -714,7 +798,9 @@
                       "keywords_must": [
                         "mysql"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   },
                   {
@@ -727,7 +813,9 @@
                       "keywords_must": [
                         "mysql"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -741,7 +829,9 @@
                       "keywords_must": [
                         "mysql"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -764,7 +854,9 @@
                       "keywords_must": [
                         "mysql"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -779,12 +871,16 @@
                       "keywords_must": [
                         "mysql"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -813,7 +909,9 @@
                           "count"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -834,7 +932,9 @@
                           "sum"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -855,7 +955,9 @@
                           "min"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -876,7 +978,9 @@
                           "max"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -888,7 +992,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   },
                   {
@@ -902,12 +1008,16 @@
                           "having"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -932,7 +1042,9 @@
                           "相关子查询"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -950,7 +1062,9 @@
                           "any"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -968,7 +1082,9 @@
                           "all"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -986,7 +1102,9 @@
                       ],
                       "keywords_forbid": [
                         "not exists"
-                      ]
+                      ],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1006,7 +1124,9 @@
                       ],
                       "keywords_forbid": [
                         "not in"
-                      ]
+                      ],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1023,7 +1143,9 @@
                           "列子查询"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
@@ -1031,7 +1153,9 @@
                   "子查询",
                   "subquery"
                 ],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -1057,7 +1181,9 @@
                           "inner join"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1074,7 +1200,9 @@
                           "left join"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1091,7 +1219,9 @@
                           "right join"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1108,7 +1238,9 @@
                           "cross join"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1124,7 +1256,9 @@
                           "复杂连接"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
@@ -1132,7 +1266,9 @@
                   "join",
                   "连接查询"
                 ],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -1155,7 +1291,9 @@
                           "入门"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1173,7 +1311,9 @@
                           "索引"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1191,12 +1331,16 @@
                           "索引"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -1210,12 +1354,16 @@
                       "keywords": [],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 1,
+                "subtree": ""
               }
             },
             {
@@ -1232,7 +1380,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1244,7 +1394,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
                     }
                   },
                   {
@@ -1256,7 +1408,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
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+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1267,12 +1421,16 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
             },
             {
@@ -1293,7 +1451,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1304,12 +1464,16 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
             },
             {
@@ -1325,7 +1489,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1340,7 +1506,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1352,7 +1520,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1365,7 +1535,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1377,7 +1549,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1389,7 +1563,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1402,17 +1578,23 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
             }
           ],
           "keywords_must": [],
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+          "keywords_forbid": [],
+          "group": 0,
+          "subtree": ""
         }
       },
       {
@@ -1434,7 +1616,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1450,7 +1634,9 @@
                           "全值匹配"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1468,7 +1654,9 @@
                           "匹配顺序"
                         ]
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1480,7 +1668,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 1,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1494,7 +1684,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1506,7 +1698,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1519,7 +1713,9 @@
                       ],
                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 0,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1539,12 +1735,16 @@
                         "performance",
                         "优化"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
             },
             {
@@ -1566,7 +1766,9 @@
                         "递归查询",
                         "recursive"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1580,7 +1782,9 @@
                       "keywords_must": [
                         "mysql"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -1595,7 +1799,9 @@
                       "keywords_must": [
                         "mysql"
                       ],
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@@ -1610,7 +1816,9 @@
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+                      "keywords_forbid": [],
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@@ -1625,7 +1833,9 @@
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+                      "keywords_forbid": [],
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@@ -1642,12 +1852,16 @@
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+                "keywords_forbid": [],
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@@ -1663,7 +1877,9 @@
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@@ -1675,7 +1891,9 @@
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+                      "keywords_forbid": [],
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@@ -1687,7 +1905,9 @@
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                       "keywords_must": [],
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+                      "keywords_forbid": [],
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@@ -1698,7 +1918,9 @@
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                       "keywords_must": [],
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+                      "keywords_forbid": [],
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@@ -1710,12 +1932,16 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
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@@ -1731,7 +1957,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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@@ -1742,7 +1970,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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@@ -1754,7 +1984,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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@@ -1766,7 +1998,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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                   {
@@ -1778,12 +2012,16 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
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@@ -1801,7 +2039,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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@@ -1815,7 +2055,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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@@ -1830,7 +2072,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                   {
@@ -1845,7 +2089,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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                   {
@@ -1858,7 +2104,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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@@ -1871,7 +2119,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                   {
@@ -1884,12 +2134,16 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
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+                      "subtree": ""
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                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
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@@ -1905,7 +2159,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                   {
@@ -1916,7 +2172,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                   {
@@ -1928,12 +2186,16 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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+                      "subtree": ""
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                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
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             {
@@ -1947,7 +2209,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
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                   },
                   {
@@ -1961,12 +2225,16 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
             },
             {
@@ -1985,7 +2253,9 @@
                       "keywords_must": [
                         "mysqladmin"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -2000,7 +2270,9 @@
                       "keywords_must": [
                         "myisampack"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -2015,7 +2287,9 @@
                       "keywords_must": [
                         "mysqlbinlog"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -2028,7 +2302,9 @@
                       "keywords_must": [
                         "mysqlcheck"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -2039,7 +2315,9 @@
                       "keywords_must": [
                         "mysqlshow"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   },
                   {
@@ -2052,12 +2330,16 @@
                       "keywords_must": [
                         "mysqlpump"
                       ],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
+                      "group": 2,
+                      "subtree": ""
                     }
                   }
                 ],
                 "keywords_must": [],
-                "keywords_forbid": []
+                "keywords_forbid": [],
+                "group": 2,
+                "subtree": ""
               }
             },
             {
@@ -2075,7 +2357,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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                     }
                   },
                   {
@@ -2088,7 +2372,9 @@
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                       "children": [],
                       "keywords_must": [],
-                      "keywords_forbid": []
+                      "keywords_forbid": [],
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@@ -2100,21 +2386,29 @@
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 }
\ No newline at end of file