| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [adv] [pron] | 2430 |
|
| 2 | [verb] when [pron] | 2043 |
|
| 3 | know when [pron] | 869 |
|
| 4 | [vb infin] when [pron] | 561 |
|
