| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but how could [pron] [vb infin] | 64 |
|
| 2 | but how [modal v] i [vb infin] | 39 |
|
| 3 | but how [vb mod] i [vb infin] | 39 |
|
| 4 | but [adv] could i [vb infin] | 17 |
|
| 5 | [conj] how could i [vb infin] | 16 |
|
| 6 | but [Wh adv] could i [vb infin] | 15 |
|
| 7 | but how could i [vb infin] | 13 |
|
| 8 | but how could i [verb] | 13 |
|
| 9 | but how could i [vb infin] | 13 |
|
