| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] has happen [prep] | 236 |
|
| 2 | [Wh det] has been [prep] | 89 |
|
| 3 | [Wh det] has been happen | 47 |
|
| 4 | has been happen [prep] | 38 |
|
