| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] how far [to-vb] | 5 |
|
| 2 | [v-ing] [Wh adv] far [to-vb] | 5 |
|
| 3 | [v-ing] how far [to-vb] | 5 |
|
