| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [vb mod] it [adv] [vb infin] | 10 |
|
| 2 | how [modal v] it possibly [vb infin] | 7 |
|
| 3 | how can it [adv] [vb infin] | 6 |
|
| 4 | how can it [adv] [vb infin] | 6 |
|
