| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it [adv] | 2022 |
|
| 2 | [subord] it happen | 800 |
|
| 3 | it [adv] happen | 405 |
|
| 4 | [subord] [adv] happen | 72 |
|
