| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't have [vb pp] a [adj -er] | 18 |
|
| 2 | [vb mod] n't have [vb pp] a better | 16 |
|
| 3 | [vb mod] n't have chosen a [adj -er] | 8 |
|
