| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [prep] [num] years | 16 |
|
| 2 | [verb] been for [num] years | 11 |
|
| 3 | [vb -s] been [prep] [num] years | 8 |
|
| 4 | has been [prep] [num] years | 6 |
|
