| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i have [vb pp] [verb] | 3604 |
|
| 2 | i could have [verb] | 705 |
|
| 3 | i could have [vb pp] | 700 |
|
| 4 | could have [vb pp] [verb] | 127 |
|
