| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not have [vb pp] a [adj] | 47 |
|
| 2 | could [adv] have [vb pp] a [adj -er] | 46 |
|
| 3 | [modal v] not have [vb pp] a [adj -er] | 40 |
|
| 4 | could not have [vb pp] [art] [adj -er] | 40 |
|
| 5 | could not have [vb pp] [art] [adj -er] | 40 |
|
| 6 | could not have [vb pp] a [adj -er] | 40 |
|
| 7 | [vb mod] not have [vb pp] a [adj -er] | 40 |
|
| 8 | could not have [vb pp] a [adj -er] | 39 |
|
| 9 | could not have [vb pp] a [adj -er] | 39 |
|
| 10 | could not have [verb] a [adj -er] | 39 |
|
| 11 | could not [vb infin] [vb pp] a [adj -er] | 39 |
|
| 12 | could not [verb] [vb pp] a [adj -er] | 39 |
|
