| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been recognised for some time | 6 |
|
| 2 | have been recognised for some time | 6 |
|
| 3 | [vb -s] been recognised for some time | 5 |
|
| 4 | has been recognised for some time | 5 |
|
