| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] [conj] [det] | 108 |
|
| 2 | must [be] [verb] [to-vb] [conj] | 87 |
|
| 3 | [be] [verb] [to-vb] [conj] [det] | 63 |
|
| 4 | must [be] [verb] [to-vb] [det] | 33 |
|
