| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it [verb] | 5193 |
|
| 2 | [noun prp] it [verb] | 669 |
|
| 3 | [noun prp] when it | 178 |
|
| 4 | [noun prp] when [verb] | 99 |
|
