| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [not/n't] [be] [verb] | 17407 |
|
| 2 | [modal v] [not/n't] [be] [verb] | 17407 |
|
| 3 | must [adv] [be] [verb] | 1610 |
|
| 4 | must [not/n't] [be] [verb] | 548 |
|
