| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been recognised | 22 |
|
| 2 | it [vb -s] been recognised | 17 |
|
| 3 | it has been recognised | 17 |
|
| 4 | it [vb past] been recognised | 5 |
|
| 5 | it had been recognised | 5 |
|
