| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [adv] be allowed | 8 |
|
| 2 | they must not be allowed | 6 |
|
| 3 | they must not be allowed | 6 |
|
| 4 | they must [not/n't] be allowed | 6 |
|
| 5 | they must be allowed [verb] | 5 |
|
| 6 | they must be allowed [to-vb] | 5 |
|
