| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] so [conj] [to-vb] | 181 |
|
| 2 | must [be] [vb pp] so [conj] | 42 |
|
| 3 | must [be] [vb pp] [conj] [to-vb] | 8 |
|
