| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] know [Wh adv] [to-vb] | 718 |
|
| 2 | do [pron] know [Wh adv] | 513 |
|
| 3 | do know [Wh adv] [to-vb] | 14 |
|
