| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] could [vb infin] | 612 |
|
| 2 | which [pers pn] could [vb infin] | 573 |
|
| 3 | which it [modal v] [vb infin] | 324 |
|
| 4 | [pron] it could [vb infin] | 88 |
|
| 5 | which it could [vb infin] | 51 |
|
| 6 | which it could [verb] | 51 |
|
