| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] be in [det] | 31 |
|
| 2 | must [verb] be [prep] [det] | 26 |
|
| 3 | must [verb] be in [adj] | 16 |
|
| 4 | must [verb] [be] in [det] | 5 |
|
