| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [prep] a long time | 25 |
|
| 2 | know [prep] a long time | 25 |
|
| 3 | know for a long time | 24 |
|
| 4 | know for a long time | 24 |
|
| 5 | known [prep] a long time | 23 |
|
