| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] proven to be | 10 |
|
| 2 | [be] proven [prep] be | 10 |
|
| 3 | [be] proven to be | 10 |
|
| 4 | be proven [prep] be | 10 |
|
| 5 | been proven [prep] be | 5 |
|
| 6 | [been] proven [prep] be | 5 |
|
