| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] been for [adj] years | 7 |
|
| 2 | it have been for [adj] years | 7 |
|
| 3 | it [vb -s] been for [adj] years | 7 |
|
| 4 | it has been for [adj] years | 6 |
|
