| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] what [modal v] | 362 |
|
| 2 | [to-vb] [pron] can | 267 |
|
| 3 | [verb] what can | 186 |
|
| 4 | [to-vb] [Wh det] can | 41 |
|
| 5 | [to-vb] what can | 36 |
|
