| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been known for [det] | 32 |
|
| 2 | have been known for some | 20 |
|
| 3 | has been known for [det] | 16 |
|
| 4 | have been known for [det] | 11 |
|
| 5 | have been known for many | 10 |
|
