| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they must have been | 28 |
|
| 2 | [subord] they must have be | 13 |
|
| 3 | [coord] they must have be | 9 |
|
| 4 | that they must have be | 6 |
|
| 5 | [that] they must have be | 6 |
|
| 6 | that they must have be | 6 |
|
