| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | years have been the [adj] | 14 |
|
| 2 | years [verb] been the [adj] | 11 |
|
| 3 | years has been the [adj] | 10 |
|
| 4 | years [vb -s] been the [adj] | 10 |
|
