| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [adv] [verb] to | 180 |
|
| 2 | [pron] [verb] [adv] happen to | 24 |
|
| 3 | it [verb] [adv] happen [prep] | 22 |
|
| 4 | it [verb] [adv] happen to | 19 |
|
