| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it is [verb] | 609 |
|
| 2 | [noun prp] when it [verb] | 94 |
|
| 3 | [noun prp] it is [verb] | 71 |
|
| 4 | [noun prp] when it is | 14 |
|
