| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [adv] [num] years | 10 |
|
| 2 | have been [vb pp] over [num] years | 8 |
|
| 3 | has been [vb pp] [adv] [num] years | 6 |
|
| 4 | have been [vb pp] only [num] years | 5 |
|
| 5 | have been [vb pp] about [num] years | 5 |
|
