| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] proved to | 16 |
|
| 2 | have [been] proved to | 16 |
|
| 3 | has [been] proved to | 7 |
|
| 4 | [vb -s] [been] proved to | 7 |
|
| 5 | [vb base] [been] proved to | 6 |
|
| 6 | have [been] proved to | 6 |
|
| 7 | [been] proved to be | 15 |
|
| 8 | [been] proved to [be] | 15 |
|
| 9 | [been] proved to [be] | 15 |
|
| 10 | [been] proved to be | 15 |
|
