| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been for [det] years | 34 |
|
| 2 | have been for many years | 23 |
|
| 3 | has been for [det] years | 17 |
|
| 4 | had been for [det] years | 10 |
|
| 5 | have been for some years | 7 |
|
| 6 | have been for [det] years | 5 |
|
