| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been known for [det] | 16 |
|
| 2 | has been known for some | 11 |
|
| 3 | has been known for some | 11 |
|
| 4 | has been known for many | 5 |
|
| 5 | has been known for many | 5 |
|
