| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] it | 4602 |
|
| 2 | [adv] it happen | 200 |
|
| 3 | [vb past] it happen | 124 |
|
| 4 | [adv] [vb past] happen | 42 |
|
