| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [vb mod] [pers pn] [verb] [num] [noun] | 8 |
|
| 2 | how [vb mod] [pron] [vb infin] [num] [noun] | 8 |
|
| 3 | how can [pron] [verb] [num] [noun] | 6 |
|
