| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been known [prep] [adj] year | 17 |
|
| 2 | [vb base] been known [prep] [adj] | 13 |
|
| 3 | [vb base] been [prep] [adj] year | 11 |
|
| 4 | [vb base] known [prep] [adj] year | 10 |
|
