| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [verb] | 1582 |
|
| 2 | they must [vb infin] | 1579 |
|
| 3 | they [modal v] act | 69 |
|
| 4 | [pron] must act | 41 |
|
| 5 | [pers pn] must act | 37 |
|
| 6 | they must act | 8 |
|
| 7 | they must act | 8 |
|
