| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it must [vb infin] | 157 |
|
| 2 | [to-vb] it [modal v] [vb infin] | 97 |
|
| 3 | [to-vb] [pron] must [vb infin] | 58 |
|
| 4 | [to-vb] [pers pn] must [vb infin] | 52 |
|
| 5 | [to-vb] it must [verb] | 11 |
|
| 6 | [to-vb] it must [vb infin] | 11 |
|
