| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb mod] [be] [vb pp] [be] | 59 |
|
| 2 | which [modal v] [be] [vb pp] [be] | 59 |
|
| 3 | [pron] must [be] [vb pp] [be] | 22 |
|
| 4 | which must [be] [vb pp] [be] | 12 |
|
| 5 | which must [be] [verb] [be] | 12 |
|
