| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must be [verb] | 350 |
|
| 2 | they must be [vb pp] | 291 |
|
| 3 | they [modal v] be allowed | 69 |
|
| 4 | [pron] must be allowed | 30 |
|
| 5 | [pers pn] must be allowed | 24 |
|
| 6 | they must be allowed | 8 |
|
| 7 | they must be allow | 8 |
|
| 8 | they must [be] allowed | 8 |
|
