| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] [art] [adj] | 30756 |
|
| 2 | [modal v] [vb infin] [art] [adj] | 30756 |
|
| 3 | must [verb] [art] [adj] | 1600 |
|
| 4 | must [vb infin] [art] [adj] | 1600 |
|
