| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] be [verb] | 18152 |
|
| 2 | must be [verb] | 12065 |
|
| 3 | must [not/n't] [verb] | 1629 |
|
| 4 | must [not/n't] be | 814 |
|
