| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] over the past two years | 18 |
|
| 2 | [noun pl] over the past five years | 12 |
|
| 3 | [noun pl] over the past 20 years | 10 |
|
| 4 | [noun pl] over the past 30 years | 9 |
|
| 5 | [noun pl] over the past four years | 7 |
|
| 6 | [noun pl] over the past three years | 6 |
|
| 7 | [noun pl] over the past 10 years | 6 |
|
| 8 | [noun pl] over the past ten years | 5 |
|
