| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [not/n't] [be] used | 28 |
|
| 2 | must [not/n't] be use | 28 |
|
| 3 | must [not/n't] [be] use | 28 |
|
| 4 | must [not/n't] be use | 28 |
|
| 5 | must not [be] use | 26 |
|
