| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been prove to | 22 |
|
| 2 | have been prove to | 22 |
|
| 3 | [vb -s] been prove to | 10 |
|
| 4 | has been prove to | 10 |
|
| 5 | [vb base] been prove to | 9 |
|
| 6 | have been prove to | 8 |
|
| 7 | been prove to [be] | 20 |
|
| 8 | been prove to be | 20 |
|
| 9 | been prove to be | 20 |
|
| 10 | been prove to [be] | 20 |
|
