| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been shown that [adj] [noun pl] | 10 |
|
| 2 | [vb -s] been shown that [adj] [noun pl] | 10 |
|
| 3 | [verb] been shown that [adj] [noun pl] | 10 |
|
| 4 | has been shown that [adj] [noun pl] | 10 |
|
| 5 | been shown that [adj] [noun pl] [vb base] | 5 |
|
| 6 | been shown that [adj] [noun pl] [verb] | 5 |
|
