| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [vb pp] [pron] | 1105 |
|
| 2 | [modal v] [vb infin] [vb pp] [pn reflx] | 297 |
|
| 3 | must [vb infin] [verb] [pn reflx] | 46 |
|
| 4 | must [verb] [vb pp] [pn reflx] | 28 |
|
