| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] [modal v] [adv] | 806 |
|
| 2 | [pron] [pron] could [adv] | 382 |
|
| 3 | which [pron] could [adv] | 349 |
|
| 4 | [Wh det] [pron] could [adv] | 212 |
|
| 5 | which [pron] could [adv] | 158 |
|
