| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] know [adv] it | 253 |
|
| 2 | [adv] know [Wh adv] it | 244 |
|
| 3 | [adv] know when [pron] | 163 |
|
| 4 | [adv] [verb] when it | 49 |
|
| 5 | [adv] know when it | 28 |
|
