| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [vb pp] for some years | 15 |
|
| 2 | [verb] been [vb pp] for some years | 15 |
|
| 3 | [vb -s] [been] [vb pp] for some years | 8 |
|
| 4 | has [been] [vb pp] for some years | 6 |
|
