| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [adv] [pron] [vb mod] | 312 |
|
| 2 | [verb] when [pron] [vb mod] | 200 |
|
| 3 | know when [pron] [vb mod] | 116 |
|
| 4 | [vb infin] when [pron] [vb mod] | 74 |
|
| 5 | know when [pron] [modal v] | 52 |
|
