| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [prep] two years | 8 |
|
| 2 | have been [verb] [prep] two years | 8 |
|
| 3 | have been [verb] for two years | 7 |
|
| 4 | have been [vb pp] [prep] two years | 7 |
|
| 5 | have been [verb] for two years | 7 |
|
