| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been shown to [be] | 13 |
|
| 2 | had be shown to [be] | 13 |
|
| 3 | [vb past] be shown to [be] | 13 |
|
| 4 | [vb past] be shown to [be] | 13 |
|
| 5 | [vb past] be shown to be | 13 |
|
| 6 | [vb past] be shown to be | 13 |
|
