| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] i [verb] | 120 |
|
| 2 | could [verb] i [vb infin] | 63 |
|
| 3 | [modal v] [verb] i have | 53 |
|
| 4 | could [verb] i have | 23 |
|
| 5 | could [verb] [pron] have | 21 |
|
