| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be shown to be | 90 |
|
| 2 | [modal v] be shown to be | 90 |
|
| 3 | can be shown to be | 63 |
|
| 4 | can be shown to be | 63 |
|
| 5 | could be shown to be | 15 |
|
| 6 | could be shown to be | 15 |
|
| 7 | may be shown to be | 5 |
|
| 8 | may be shown to be | 5 |
|
