| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] have happen in | 140 |
|
| 2 | [Wh det] have been in | 128 |
|
| 3 | [Wh det] have been happen | 105 |
|
| 4 | have been happen in | 35 |
|
