| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] known for some | 20 |
|
| 2 | [vb base] [been] known for | 15 |
|
| 3 | [vb base] [been] for some | 10 |
|
| 4 | [vb base] known for some | 10 |
|
