| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been known [to-vb] [prep] [adj] | 10 |
|
| 2 | [vb base] been known [to-vb] [prep] [adj] | 7 |
|
| 3 | have been known [to-vb] [prep] [adj] | 6 |
|
| 4 | [verb] been known [to-vb] [prep] [num] | 5 |
|
