| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be shown to be [vb pp] | 7 |
|
| 2 | [vb mod] be shown to [be] [vb pp] | 7 |
|
| 3 | [vb mod] be shown to be [vb pp] | 7 |
|
| 4 | can be shown to [be] [vb pp] | 5 |
|
