| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb mod] happen to | 293 |
|
| 2 | [prep] [Wh det] [vb mod] happen | 237 |
|
| 3 | [prep] [Wh det] [vb mod] to | 108 |
|
