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