| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] could have [verb] | 33 |
|
| 2 | which [pers pn] could have [verb] | 32 |
|
| 3 | which it [modal v] have [verb] | 17 |
|
| 4 | which it [vb mod] have [verb] | 17 |
|
| 5 | which it could [verb] [verb] | 10 |
|
| 6 | [pron] it could have [verb] | 6 |
|
| 7 | which it could have [verb] | 5 |
|
| 8 | which it could have [verb] | 5 |
|
