| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been known for some | 20 |
|
| 2 | have [been] known for some | 20 |
|
| 3 | have be known for some | 20 |
|
| 4 | has [be] known for some | 11 |
|
| 5 | have [be] known for some | 5 |
|
