| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] when [pron] | 2043 |
|
| 2 | know when [pron] | 869 |
|
| 3 | to know [adv] [pron] | 586 |
|
| 4 | [to-vb] when [pron] | 201 |
|
