| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have had [art] [adj] | 19 |
|
| 2 | could have have [art] [adj] | 19 |
|
| 3 | could have have a [adj] | 17 |
|
| 4 | could have have a [adj] | 15 |
|
