| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [verb] [prep] | 78600 |
|
| 2 | [modal v] [verb] [prep] [be] | 7227 |
|
| 3 | [be] [verb] [prep] [be] | 1700 |
|
| 4 | [modal v] [be] [prep] [be] | 24 |
|
