| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [verb] | 1582 |
|
| 2 | they must [vb infin] | 1579 |
|
| 3 | they [modal v] see | 550 |
|
| 4 | [pron] must see | 153 |
|
| 5 | [pers pn] must see | 147 |
|
| 6 | they must see | 5 |
|
| 7 | they must see | 5 |
|
