| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [prep] [be] [prep] [noun] | 84 |
|
| 2 | [modal v] [vb infin] [prep] [be] [prep] [noun] | 83 |
|
| 3 | [modal v] have [prep] [be] [prep] [noun] | 27 |
|
