| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which they [modal v] [verb] | 474 |
|
| 2 | [prep] which they [vb mod] [verb] | 474 |
|
| 3 | [prep] which [pron] could [verb] | 373 |
|
| 4 | [prep] [pron] they could [verb] | 161 |
|
| 5 | [prep] [Wh det] they could [verb] | 134 |
|
| 6 | [prep] which they could [verb] | 106 |
|
| 7 | [prep] which they could [verb] | 106 |
|
