| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [modal v] i [vb infin] | 866 |
|
| 2 | what could [pron] [vb infin] | 247 |
|
| 3 | [pron] could i [vb infin] | 75 |
|
| 4 | what could i [verb] | 55 |
|
