| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [vb pp] a [adj] | 113 |
|
| 2 | could have [verb] a [adj] | 83 |
|
| 3 | could have had a [adj] | 22 |
|
| 4 | could have have a [adj] | 22 |
|
| 5 | could have [verb] a [adj -er] | 18 |
|
| 6 | could have [verb] a good | 15 |
|
| 7 | could have made a [adj] | 12 |
|
| 8 | could have make a [adj] | 12 |
|
| 9 | could have [verb] a better | 10 |
|
| 10 | could have [verb] a few | 7 |
|
| 11 | could have [verb] a [det] | 7 |
|
| 12 | could have [verb] a few | 7 |
|
| 13 | could have do a [adj] | 5 |
|
| 14 | could have [verb] a good | 5 |
|
| 15 | could have done a [adj] | 5 |
|
