| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been for [adj] year | 21 |
|
| 2 | has been for [adj] years | 21 |
|
| 3 | has been for [det] year | 17 |
|
| 4 | has been for many year | 10 |
|
| 5 | has been for many year | 10 |
|
