| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could perfectly [adv] have [verb] | 6 |
|
| 2 | [vb mod] perfectly [adv] have [verb] | 6 |
|
| 3 | [modal v] perfectly [adv] have [verb] | 6 |
|
| 4 | could perfectly [adv] have [verb] | 6 |
|
