| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [modal v] [pron] | 3683 |
|
| 2 | [v-ing] what [pron] | 1764 |
|
| 3 | [v-ing] what [modal v] | 191 |
|
| 4 | [v-ing] [modal v] [pron] | 60 |
|
