| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [adv] [be] [verb] | 1610 |
|
| 2 | must [adv] [be] [verb] | 1062 |
|
| 3 | [vb mod] never [be] [verb] | 886 |
|
| 4 | [modal v] never [be] [verb] | 886 |
|
| 5 | must never [be] [verb] | 57 |
|
| 6 | must never [be] [verb] | 57 |
|
