| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [verb] | 3134 |
|
| 2 | [pron] must [not/n't] [verb] | 1141 |
|
| 3 | must [not/n't] be [verb] | 548 |
|
| 4 | [pron] must [not/n't] be | 287 |
|
| 5 | [pron] [not/n't] be [verb] | 67 |
|
