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