| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] [vb pp] | 40102 |
|
| 2 | [modal v] [vb infin] [vb pp] | 40102 |
|
| 3 | must [vb infin] [verb] | 5615 |
|
| 4 | must [verb] [vb pp] | 4653 |
|
| 5 | must [vb infin] [vb pp] | 4653 |
|
