| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [conj] how [to-vb] | 80 |
|
| 2 | [v-ing] [conj] [adv] [to-vb] | 34 |
|
| 3 | [v-ing] [conj] how [verb] | 9 |
|
