| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [be] [conj] i | 47 |
|
| 2 | must [vb infin] [be] [conj] [pron] | 18 |
|
| 3 | must [verb] [be] [conj] i | 7 |
|
