| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [prep] a [adj] time | 28 |
|
| 2 | know for a [adj] time | 26 |
|
| 3 | known [prep] a [adj] time | 25 |
|
| 4 | know [prep] a long time | 25 |
|
