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