| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [verb] | 16859 |
|
| 2 | [adv] did | 13725 |
|
| 3 | how do | 7329 |
|
| 4 | [Wh adv] did | 6107 |
|
| 5 | how [vb past] | 2409 |
|
| 6 | how did | 2109 |
|
