| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb mod] be [vb pp] | 31471 |
|
| 2 | it [vb mod] be [verb] | 12234 |
|
| 3 | it [vb mod] [be] [vb pp] | 11464 |
|
| 4 | it [modal v] be [vb pp] | 11464 |
|
