| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] [pron] | 22807 |
|
| 2 | [verb] [pron] could | 6733 |
|
| 3 | [Wh det] [pron] could | 1915 |
|
| 4 | [verb] [Wh det] could | 239 |
|
