| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [be] [prep] [noun] | 281 |
|
| 2 | must [verb] [be] [prep] [noun] | 40 |
|
| 3 | must [vb infin] [be] [prep] [noun] | 40 |
|
| 4 | must have [be] [prep] [noun] | 39 |
|
