| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could have [verb] a [noun] | 7 |
|
| 2 | they could have [vb pp] a [noun] | 7 |
|
| 3 | they could have a [adj] [noun] | 11 |
|
| 4 | they could have a [adj] [noun] | 9 |
|
