| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know about | 50 |
|
| 2 | known about | 43 |
|
| 3 | know about | 27 |
|
| 4 | know about | 15 |
|
| 5 | know about | 11 |
|
| 6 | to know about | 5 |
|
