| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] to be | 764 |
|
| 2 | been [vb pp] to be | 751 |
|
| 3 | [be] proved to be | 53 |
|
| 4 | be proved to be | 53 |
|
| 5 | been prove to be | 20 |
|
| 6 | been proved [prep] be | 15 |
|
| 7 | [been] proved to be | 15 |
|
| 8 | been proved to [be] | 15 |
|
| 9 | been proved to be | 15 |
|
| 10 | been proved [prep] be | 15 |
|
