| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must not be [vb pp] to | 34 |
|
| 2 | must not be [verb] to | 34 |
|
| 3 | must not be [verb] to | 32 |
|
| 4 | must not be leave to | 5 |
|
| 5 | must not be allowed to | 5 |
|
| 6 | must not be left to | 5 |
|
| 7 | must not be allow to | 5 |
|
