| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] it | 7641 |
|
| 2 | [verb] when it | 756 |
|
| 3 | [vb past] [verb] when | 624 |
|
| 4 | [vb past] when it | 123 |
|
