| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not have [verb] [art] [adj -er] | 22 |
|
| 2 | could not have [vb pp] [art] [adj -er] | 22 |
|
| 3 | could not have [verb] a [adj -er] | 22 |
|
| 4 | could not have [verb] [art] [adj -er] | 22 |
|
| 5 | could not have [verb] a [adj -er] | 21 |
|
| 6 | could not have [verb] [art] better | 17 |
|
| 7 | could not have had [art] [adj -er] | 5 |
|
| 8 | could not have have [art] [adj -er] | 5 |
|
