| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over the next 20 years | 18 |
|
| 2 | [noun sg] over the [num ord] 20 years | 16 |
|
| 3 | [noun] over the last 20 years | 16 |
|
| 4 | [noun pl] over the [num ord] 20 years | 14 |
|
