| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [adv] have | 276 |
|
| 2 | could [adv] [adv] have | 268 |
|
| 3 | could [adv] just [verb] | 101 |
|
| 4 | [modal v] [adv] just have | 35 |
|
| 5 | could [adv] just have | 5 |
|
