| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb past] [pron] | 840 |
|
| 2 | know [pron] [vb past] [pron] | 516 |
|
| 3 | know when [pron] [vb past] | 146 |
|
| 4 | know when [pron] [pron] | 5 |
|
