| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how could [pron] [adv] [verb] | 150 |
|
| 2 | how could [pron] [verb] [det] | 109 |
|
| 3 | could [pron] [adv] [verb] [det] | 46 |
|
| 4 | how [pron] [adv] [verb] [det] | 6 |
|
