| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must not be [vb pp] [verb] | 76 |
|
| 2 | [noun prp] must not be [verb] | 19 |
|
| 3 | [noun prp] must not be [vb pp] | 19 |
|
| 4 | [noun prp] must be [vb pp] [verb] | 11 |
|
