| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] how [to-vb] [prep] [noun] | 60 |
|
| 2 | [prep] [adv] [to-vb] [prep] [noun sg] | 38 |
|
| 3 | [prep] how [verb] [prep] [noun sg] | 25 |
|
