| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] [be] [verb] | 3019 |
|
| 2 | know [Wh det] [be] [verb] | 740 |
|
| 3 | [vb infin] [Wh det] [be] [verb] | 704 |
|
| 4 | know [pron] [be] [verb] | 551 |
|
