| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [not/n't] [be] [verb] [prep] | 185 |
|
| 2 | [not/n't] [be] [verb] [prep] be | 125 |
|
| 3 | must [be] [verb] [prep] be | 71 |
|
