| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [verb] to | 2869 |
|
| 2 | [pron] happen to | 2077 |
|
| 3 | [Wh pn] happen [prep] | 121 |
|
| 4 | [Wh pn] happen [prep] | 121 |
|
| 5 | [Wh pn] happen to | 118 |
|
