| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [modal v] [noun] [verb] | 168 |
|
| 2 | how [vb mod] [noun] [verb] | 168 |
|
| 3 | [adv] could [noun] [verb] | 70 |
|
| 4 | [Wh adv] could [noun] [verb] | 53 |
|
| 5 | how could [noun] [verb] | 51 |
|
| 6 | how could [noun] [verb] | 51 |
|
