| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun prp] [modal v] [vb infin] | 2494 |
|
| 2 | [prep] [noun] must [vb infin] | 558 |
|
| 3 | [prep] [noun prp] must [verb] | 126 |
|
