| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [verb] for some years | 24 |
|
| 2 | have been [verb] for some years | 24 |
|
| 3 | had been [verb] for some years | 11 |
|
| 4 | [vb past] been [verb] for some years | 11 |
|
| 5 | [vb -s] been [verb] for some years | 10 |
|
| 6 | has been [verb] for some years | 8 |
|
