| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [adv] for [num] years | 10 |
|
| 2 | [vb past] be [adv] for [num] years | 10 |
|
| 3 | had be [adv] for [num] years | 9 |
|
| 4 | [vb past] be there for [num] years | 5 |
|
