| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must not be | 814 |
|
| 2 | must not [be] | 814 |
|
| 3 | must not be | 814 |
|
| 4 | must not [be] | 732 |
|
| 5 | must n't [be] | 82 |
|
