| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [to-vb] know [prep] | 9 |
|
| 2 | [Wh det] [be] [to-vb] know [prep] | 9 |
|
| 3 | what [be] [to-vb] know [prep] | 8 |
|
| 4 | what [be] [to-vb] know [prep] | 8 |
|
