| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know about | 1163 |
|
| 2 | know about | 636 |
|
| 3 | to know about | 599 |
|
| 4 | known about | 522 |
|
| 5 | knew about | 477 |
|
| 6 | knows about | 199 |
|
| 7 | knowing about | 64 |
|
