| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [prep] 12 year | 10 |
|
| 2 | have been [verb] [prep] 12 years | 10 |
|
| 3 | have been [vb pp] [prep] 12 year | 8 |
|
| 4 | has been [verb] [prep] 12 year | 8 |
|
| 5 | have been [verb] for 12 year | 7 |
|
| 6 | have been [verb] for 12 year | 7 |
|
