| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] long been a [noun] for | 11 |
|
| 2 | have long been a [noun] for | 11 |
|
| 3 | [vb -s] long been a [noun] for | 7 |
|
| 4 | has long been a [noun] for | 7 |
|
