| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [vb pp] [conj] it [be] | 171 |
|
| 2 | [be] [vb pp] when it [be] | 75 |
|
| 3 | [is] [vb pp] when [pron] [be] | 32 |
|
| 4 | [is] [verb] when it [be] | 14 |
|
