| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [vb mod] to | 108 |
|
| 2 | to [pron] [vb mod] to | 22 |
|
| 3 | to what [vb mod] [prep] | 14 |
|
| 4 | to what [modal v] to | 10 |
|
