| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] for a [adj] [noun] | 272 |
|
| 2 | must [verb] [prep] a [adj] [noun] | 95 |
|
| 3 | must [verb] for [art] [adj] [noun] | 24 |
|
| 4 | must [verb] for a [adj] [noun] | 13 |
|
