| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pron] [vb mod] | 7726 |
|
| 2 | what [pron] [modal v] | 7726 |
|
| 3 | [pron] [pron] could | 3930 |
|
| 4 | [Wh det] [pron] could | 1915 |
|
| 5 | what [pron] could | 806 |
|
| 6 | what [pron] could | 806 |
|
