| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been for [adj] years | 45 |
|
| 2 | have been for [det] years | 34 |
|
| 3 | have been for many years | 23 |
|
| 4 | have been for many years | 23 |
|
| 5 | has been for [adj] years | 21 |
|
| 6 | had been for [adj] years | 12 |
|
| 7 | have been for [num] years | 11 |
|
| 8 | have been for some years | 7 |
|
| 9 | have been for some years | 7 |
|
| 10 | have been for [adj] years | 6 |
|
