| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [modal v] | 2049 |
|
| 2 | [prep] what [modal v] | 2049 |
|
| 3 | about [pron] [modal v] | 346 |
|
| 4 | about what [modal v] | 189 |
|
