| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] [conj] it [verb] | 535 |
|
| 2 | [be] [vb pp] when [pron] [verb] | 513 |
|
| 3 | [be] [verb] when it [verb] | 62 |
|
