| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be shown to be | 90 |
|
| 2 | can be shown [prep] be | 63 |
|
| 3 | could be shown [prep] be | 15 |
|
| 4 | may be shown [prep] be | 5 |
|
