| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [conj] it [is] | 1139 |
|
| 2 | [verb] when it [is] | 183 |
|
| 3 | [vb -s] when [pron] [is] | 102 |
|
| 4 | [vb -s] when it [be] | 34 |
|
