| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] ten years | 11 |
|
| 2 | it [verb] ten years | 8 |
|
| 3 | it [verb] [been] years | 7 |
|
| 4 | it [verb] [been] ten | 7 |
|
