| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] [conj] it [verb] | 220 |
|
| 2 | [be] [vb pp] when [pron] [verb] | 138 |
|
| 3 | [be] [vb pp] when it [verb] | 55 |
|
| 4 | [be] [verb] when it [verb] | 21 |
|
