| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has been [vb pp] as | 76 |
|
| 2 | it had been [vb pp] as | 19 |
|
| 3 | it have been described as | 16 |
|
| 4 | it have been used as | 15 |
|
| 5 | it 's been [vb pp] as | 13 |
|
| 6 | it have been identified as | 7 |
|
| 7 | it have been seen as | 6 |
|
