| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been know [prep] some time | 16 |
|
| 2 | have [been] known [prep] some time | 16 |
|
| 3 | have [been] know for some time | 16 |
|
| 4 | has [been] know [prep] some time | 10 |
|
