| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] to | 11238 |
|
| 2 | [pron] happen to | 2077 |
|
| 3 | [pers pn] happen to | 510 |
|
| 4 | it happen [prep] | 472 |
|
| 5 | it happen to | 219 |
|
