| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [adv] [verb] to | 252 |
|
| 2 | [pron] [adv] happen to | 158 |
|
| 3 | [Wh pn] [adv] happen [prep] | 17 |
|
| 4 | [Wh pn] [adv] happen to | 17 |
|
| 5 | [Wh pn] [adv] happen [prep] | 17 |
|
| 6 | [Wh pn] [adv] happen to | 17 |
|
