| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been ten year | 11 |
|
| 2 | [verb] been ten years | 11 |
|
| 3 | have been ten year | 11 |
|
| 4 | had been ten year | 5 |
|
| 5 | [vb past] been ten year | 5 |
|
