| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [Wh det] [pron] [be] | 2875 |
|
| 2 | [verb] [Wh det] [pron] [is] | 1652 |
|
| 3 | know [pron] [pron] [is] | 979 |
|
