| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] for [art] | 2313 |
|
| 2 | [vb mod] [vb infin] for [art] | 2313 |
|
| 3 | must [vb infin] [prep] [art] | 1429 |
|
| 4 | must [vb infin] for [art] | 115 |
|
| 5 | must [vb infin] for [art] | 115 |
|
| 6 | must [verb] for [art] | 115 |
|
