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