| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [adj] to | 481 |
|
| 2 | must [vb infin] [adj] [prep] | 92 |
|
| 3 | must [vb infin] [adj] to | 44 |
|
| 4 | must [verb] [adj] to | 31 |
|
