| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [adv] [modal v] | 677 |
|
| 2 | how [adv] [vb mod] | 677 |
|
| 3 | [adv] [adv] could | 377 |
|
| 4 | how [adv] could | 71 |
|
