| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] over the last two years | 10 |
|
| 2 | [noun pl] over the last twenty years | 9 |
|
| 3 | [noun pl] over the last three years | 9 |
|
| 4 | [noun pl] over the last 20 years | 7 |
|
| 5 | [noun pl] over the last thirty years | 7 |
|
| 6 | [noun pl] over the last ten years | 7 |
|
| 7 | [noun pl] over the last 30 years | 6 |
|
| 8 | [noun pl] over the last 10 years | 5 |
|
