| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] a [noun] | 1542 |
|
| 2 | could have [vb pp] [noun] | 295 |
|
| 3 | could have a [noun] | 276 |
|
| 4 | could have [vb pp] a | 273 |
|
