| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which has been [vb pp] to [be] | 14 |
|
| 2 | which has be [vb pp] to [be] | 14 |
|
| 3 | which has be [vb pp] to be | 14 |
|
| 4 | which has be shown to [be] | 6 |
|
