| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [verb] of [prep] | 132 |
|
| 2 | [vb mod] [be] [verb] of [prep] | 132 |
|
| 3 | could [be] [verb] [prep] [prep] | 122 |
|
| 4 | could [be] [verb] of [prep] | 9 |
|
