| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [vb pp] by [det] | 32 |
|
| 2 | it has been [vb pp] by [det] | 23 |
|
| 3 | it have been [vb pp] by some | 17 |
|
| 4 | it had been [vb pp] by [det] | 7 |
|
| 5 | it have been [vb pp] by many | 5 |
|
| 6 | it have been argued by [det] | 5 |
|
