| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for years | 15 |
|
| 2 | has been [v-ing] for years | 10 |
|
| 3 | has been [vb pp] for years | 5 |
|
| 4 | has been for [adj] years | 21 |
|
| 5 | has been for [det] years | 17 |
|
| 6 | has been for many years | 10 |
|
| 7 | has been for many years | 10 |
|
