| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [prep] a [noun] | 592 |
|
| 2 | [verb] [prep] a [letter] | 221 |
|
| 3 | know [prep] [art] [letter] | 20 |
|
| 4 | know [prep] a [letter] | 9 |
|
