| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have [vb pp] a [adj -er] | 12 |
|
| 2 | [pers pn] could have [vb pp] a [adj -er] | 11 |
|
| 3 | could [adv] have [vb pp] a [adj -er] | 46 |
|
| 4 | could [not/n't] have [vb pp] a [adj -er] | 39 |
|
| 5 | could not have [vb pp] a [adj -er] | 39 |
|
| 6 | could not have [vb pp] a [adj -er] | 21 |
|
| 7 | could n't have [vb pp] a [adj -er] | 18 |
|
| 8 | could [adv] have [vb pp] a [adj -er] | 7 |
|
| 9 | could have [vb pp] a [adj -er] [noun sg] | 16 |
|
| 10 | could have [vb pp] a [adj -er] [noun] | 16 |
|
