| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it [adv] happen | 43 |
|
| 2 | it [adv] happen to | 40 |
|
| 3 | [coord] it happen to | 16 |
|
| 4 | [coord] [adv] happen to | 6 |
|
