| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could | 87089 |
|
| 2 | which [modal v] | 32487 |
|
| 3 | which [vb mod] | 32487 |
|
| 4 | [Wh det] could | 4543 |
|
| 5 | which could | 3545 |
|
| 6 | which could | 3545 |
|
