| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] could have [vb pp] a | 29 |
|
| 2 | [noun prp] could have [vb pp] a | 22 |
|
| 3 | [noun pl] could have [vb pp] a | 20 |
|
| 4 | [noun] could have had a | 9 |
|
| 5 | [noun] could have made a | 6 |
|
