| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [to-vb] [det] | 33 |
|
| 2 | must [be] [vb pp] [to-vb] [det] | 33 |
|
| 3 | must [be] [verb] [to-vb] all | 8 |
|
| 4 | must [be] [verb] [to-vb] these | 6 |
|
| 5 | must [be] [verb] [to-vb] such | 5 |
|
