| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [be] | 3545 |
|
| 2 | must [vb infin] [conj] | 2005 |
|
| 3 | [vb infin] [be] [conj] | 852 |
|
| 4 | must [be] [conj] | 192 |
|
