| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [that] they must [vb infin] | 15 |
|
| 2 | [vb base] that they must [verb] | 15 |
|
| 3 | [vb base] [that] they must [verb] | 15 |
|
| 4 | [vb base] [that] they must [verb] | 15 |
|
| 5 | know [that] they must [verb] | 5 |
|
