| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb -s] [verb] to | 556 |
|
| 2 | [Wh det] [verb] happen to | 524 |
|
| 3 | [Wh det] [vb -s] happen [prep] | 458 |
|
| 4 | [Wh det] [vb -s] happen [prep] | 458 |
|
| 5 | [pron] [vb -s] happen to | 350 |
|
| 6 | [Wh det] [vb -s] happen to | 306 |
|
