| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [noun pl] have be shown to | 7 |
|
| 2 | [noun sg] [noun pl] [verb] been shown to | 7 |
|
| 3 | [noun sg] [noun pl] have be shown to | 5 |
|
| 4 | [noun sg] [noun pl] [vb base] be shown to | 5 |
|
