| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [vb infin] | 1624 |
|
| 2 | [prep] they must | 79 |
|
| 3 | [prep] must [vb infin] | 15 |
|
| 4 | [prep] they [vb infin] | 8 |
|
