| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] to | 892 |
|
| 2 | could be [vb pp] to | 869 |
|
| 3 | [modal v] be shown to | 108 |
|
| 4 | [vb mod] be shown to | 108 |
|
| 5 | could be shown [prep] | 29 |
|
| 6 | could be shown [prep] | 29 |
|
| 7 | could be show to | 17 |
|
| 8 | could [be] shown to | 17 |
|
| 9 | could [be] shown to | 17 |
|
| 10 | could be shown to | 17 |
|
| 11 | could be shown to | 17 |
|
| 12 | could be shown to | 17 |
|
