| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [modal v] [verb] to [be] | 196 |
|
| 2 | [pron] [modal v] prove to [be] | 73 |
|
| 3 | [Wh det] [modal v] prove to [be] | 36 |
|
| 4 | which [modal v] prove [prep] [be] | 16 |
|
| 5 | which [modal v] prove to [be] | 16 |
|
