| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [verb] to [be] | 2346 |
|
| 2 | [Wh det] [vb past] to [be] | 896 |
|
| 3 | [pron] proved to [be] | 201 |
|
| 4 | [Wh det] prove to [be] | 84 |
|
| 5 | [Wh det] proved [prep] [be] | 76 |
|
