| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] have [verb] i | 13 |
|
| 2 | could [not/n't] have [verb] i | 13 |
|
| 3 | could [not/n't] have [vb pp] i | 13 |
|
| 4 | could [not/n't] have [verb] me | 10 |
|
| 5 | could n't have [verb] i | 9 |
|
