| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] [be] [adj] | 45 |
|
| 2 | [vb mod] [verb] of [be] [adj] | 7 |
|
| 3 | [modal v] [verb] of [be] [adj] | 7 |
|
| 4 | could [verb] of [be] [adj] | 5 |
|
