| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have done [adv] [conj] | 198 |
|
| 2 | could have done [adv] | 70 |
|
| 3 | could have done [conj] | 13 |
|
| 4 | could have [adv] [conj] | 7 |
|
