| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] how [verb] | 712 |
|
| 2 | [pron] how [to-vb] | 660 |
|
| 3 | [pron] [adv] to do | 412 |
|
| 4 | [pron] how do | 126 |
|
