| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it is [verb] | 609 |
|
| 2 | [vb infin] when it [verb] | 60 |
|
| 3 | [vb infin] it is [verb] | 37 |
|
| 4 | [vb infin] when it is | 11 |
|
