| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] how could [pron] [adv] [verb] | 14 |
|
| 2 | [coord] how could [pron] [adv] [verb] | 14 |
|
| 3 | but how [modal v] [pron] [adv] [verb] | 12 |
|
| 4 | but how could [pron] [adv] [verb] | 8 |
|
| 5 | but [Wh adv] could [pron] [adv] [verb] | 8 |
|
| 6 | but [adv] could [pron] [adv] [verb] | 8 |
|
| 7 | but how could [pron] [adv] [verb] | 8 |
|
