| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be known [prep] some time | 17 |
|
| 2 | [be] known for some time | 17 |
|
| 3 | [been] known [prep] some time | 16 |
|
| 4 | been known [prep] some time | 16 |
|
