| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [noun sg] must not [be] | 21 |
|
| 2 | this [noun] must not [be] | 21 |
|
| 3 | this must not [be] [vb pp] | 16 |
|
| 4 | this must not [be] [verb] | 16 |
|
