| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has [be] know for some | 7 |
|
| 2 | it has [be] known for some | 7 |
|
| 3 | it has be know for some | 7 |
|
| 4 | it has [been] know for some | 7 |
|
| 5 | it has been know for some | 7 |
|
