| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [verb] [to-vb] [det] | 644 |
|
| 2 | must [be] [verb] [to-vb] [adj] | 69 |
|
| 3 | must [be] [verb] [verb] [det] | 35 |
|
| 4 | must [be] [verb] [to-vb] [det] | 33 |
|
