| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know the difference [prep] | 47 |
|
| 2 | know the difference between | 45 |
|
| 3 | know the difference [prep] | 16 |
|
| 4 | know the difference [prep] | 12 |
|
| 5 | to know the difference [prep] | 8 |
|
| 6 | knew the difference [prep] | 6 |
|
