| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [adv] [prep] | 670 |
|
| 2 | must [vb infin] [adv prt] [prep] | 374 |
|
| 3 | [modal v] [vb infin] around [prep] | 83 |
|
| 4 | must [vb infin] around [prep] | 6 |
|
| 5 | must [verb] around [prep] | 6 |
|
