| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [modal v] [vb infin] | 252 |
|
| 2 | [prep] [vb mod] [vb infin] | 252 |
|
| 3 | [prep] must [verb] | 16 |
|
| 4 | [prep] must [vb infin] | 15 |
|
