| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [vb pp] [adj] | 119 |
|
| 2 | could have [verb] [adj] | 113 |
|
| 3 | could have had [adj] | 16 |
|
| 4 | could have have [adj] | 16 |
|
| 5 | could have go [adj] | 8 |
|
| 6 | could have [verb] other | 8 |
|
| 7 | could have gone [adj] | 8 |
|
| 8 | could have [verb] serious | 7 |
|
| 9 | could have get [adj] | 7 |
|
| 10 | could have got [adj] | 7 |
|
| 11 | could 've [verb] [adj] | 6 |
|
| 12 | could have become [adj] | 5 |
|
| 13 | could have become [adj] | 5 |
|
