| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [conj] it [is] | 491 |
|
| 2 | [vb mod] [verb] when [pron] [is] | 23 |
|
| 3 | [vb mod] [verb] when it [be] | 13 |
|
| 4 | [modal v] [verb] when it [is] | 7 |
|
