| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [be] shown to [be] | 100 |
|
| 2 | [vb -s] [be] shown to be | 100 |
|
| 3 | [vb -s] [been] shown to [be] | 100 |
|
| 4 | [vb -s] [be] shown to [be] | 100 |
|
| 5 | [vb -s] be shown to [be] | 100 |
|
| 6 | [vb -s] been shown to [be] | 100 |
|
| 7 | [vb -s] [be] shown to be | 100 |
|
