| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it [verb] [art] | 418 |
|
| 2 | when it [verb] [art] | 354 |
|
| 3 | [vb past] when it [verb] | 64 |
|
| 4 | [vb past] when [verb] [art] | 17 |
|
