| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] prove [prep] [be] | 281 |
|
| 2 | [vb mod] prove [prep] [be] | 281 |
|
| 3 | should [verb] [prep] [be] | 158 |
|
| 4 | should prove [prep] [be] | 15 |
|
