| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over the [num ord] 40 years | 11 |
|
| 2 | [noun sg] over [art] [num ord] 40 years | 7 |
|
| 3 | [noun] over [art] next 40 years | 6 |
|
| 4 | [noun] over [art] last 40 years | 5 |
|
