| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have often been [vb pp] as | 35 |
|
| 2 | have often [been] [vb pp] as | 35 |
|
| 3 | has often [been] [vb pp] as | 26 |
|
| 4 | have often [been] seen as | 8 |
|
| 5 | have often [been] [vb pp] as | 7 |
|
| 6 | have often [been] regarded as | 7 |
|
