| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] as [noun] | 94 |
|
| 2 | have been [vb pp] as [noun pl] | 46 |
|
| 3 | have been [vb pp] as [noun sg] | 42 |
|
| 4 | have been [vb pp] as part | 17 |
|
| 5 | have been [vb pp] as part | 17 |
|
| 6 | have been used as [noun] | 13 |
|
| 7 | have been treated as [noun] | 5 |
|
