| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how could [pron] [vb infin] | 885 |
|
| 2 | how [modal v] i [vb infin] | 759 |
|
| 3 | [adv] could i [vb infin] | 215 |
|
| 4 | [Wh adv] could i [vb infin] | 170 |
|
| 5 | how could i [vb infin] | 161 |
|
| 6 | how could i [verb] | 161 |
|
