| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] they [modal v] be [vb pp] | 184 |
|
| 2 | [prep] they [vb mod] be [vb pp] | 184 |
|
| 3 | [prep] [pron] must be [vb pp] | 57 |
|
| 4 | [prep] they must be [verb] | 11 |
|
| 5 | [prep] they must be [vb pp] | 10 |
|
| 6 | [prep] they must [be] [vb pp] | 10 |
|
| 7 | [prep] they must [be] [vb pp] | 10 |
|
| 8 | [prep] they must be [vb pp] | 10 |
|
