| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] have | 722 |
|
| 2 | which [vb mod] [adv] have | 308 |
|
| 3 | which [modal v] [adv] have | 308 |
|
| 4 | which could [adv] [verb] | 205 |
|
| 5 | which could [adv] have | 60 |
|
| 6 | [Wh det] could [adv] have | 44 |
|
| 7 | which could [adv] have | 38 |
|
| 8 | which could [adv] have | 38 |
|
