| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [adv] [vb infin] | 180 |
|
| 2 | [vb base] they [adv] [vb infin] | 153 |
|
| 3 | [vb base] they must [vb infin] | 54 |
|
| 4 | [vb base] they must [adv] | 5 |
|
