| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | proved [prep] [be] [adj] | 179 |
|
| 2 | [verb] [prep] [be] impossible | 41 |
|
| 3 | prove [prep] [be] impossible | 14 |
|
| 4 | [vb past] [prep] [be] impossible | 8 |
|
| 5 | proved [prep] [be] impossible | 7 |
|
