| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [be] [verb] [prep] [det] | 225 |
|
| 2 | must have [be] [verb] [prep] [adj] | 46 |
|
| 3 | must [verb] [be] [verb] [prep] [det] | 28 |
|
