| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [verb] to | 892 |
|
| 2 | could [be] [vb pp] to | 869 |
|
| 3 | [vb mod] [be] shown to | 108 |
|
| 4 | [modal v] [be] shown to | 108 |
|
| 5 | could [be] shown [prep] | 29 |
|
| 6 | could [be] shown [prep] | 29 |
|
| 7 | could [be] shown to | 17 |
|
| 8 | could [be] show to | 17 |
|
| 9 | could [be] shown to | 17 |
|
| 10 | could [be] shown to | 17 |
|
