| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [vb infin] | 1624 |
|
| 2 | [adv] they [vb infin] | 465 |
|
| 3 | [adv] must [vb infin] | 464 |
|
| 4 | [adv] they must | 209 |
|
