| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [vb base] [pron] [verb] | 3159 |
|
| 2 | [vb base] [pron] [verb] [v-ing] | 525 |
|
| 3 | how [pron] [verb] [v-ing] | 42 |
|
