| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] [vb past] to | 407 |
|
| 2 | know [pron] [vb past] to | 145 |
|
| 3 | know [Wh det] [verb] to | 132 |
|
| 4 | know [Wh det] [vb past] [prep] | 126 |
|
