| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [be] recognised for some time | 5 |
|
| 2 | has [been] recognised [prep] some time | 5 |
|
| 3 | has been recognised [prep] some time | 5 |
|
| 4 | has be recognised [prep] some time | 5 |
|
