| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [adj] [noun] | 163 |
|
| 2 | [modal v] have [adj] implication | 90 |
|
| 3 | could have [adj] implication | 21 |
|
| 4 | could [verb] [adj] implication | 21 |
|
