| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] long been recognised | 41 |
|
| 2 | have long been recognised | 41 |
|
| 3 | [vb -s] long been recognised | 35 |
|
| 4 | has long been recognised | 35 |
|
| 5 | [vb base] long been recognised | 5 |
|
| 6 | have long been recognised | 5 |
|
