| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over the last [adj] years | 426 |
|
| 2 | [noun] over the last [num] years | 341 |
|
| 3 | [noun] [prep] the last thirty years | 35 |
|
| 4 | [noun] [prep] the last thirty years | 35 |
|
| 5 | [noun] over the [adj] thirty years | 24 |
|
| 6 | [noun] over the last thirty years | 15 |
|
| 7 | [noun] over the last thirty [noun pl] | 15 |
|
| 8 | [noun] over [art] last thirty years | 15 |
|
| 9 | [noun] over [art] last thirty years | 15 |
|
| 10 | [noun] over the last thirty years | 15 |
|
| 11 | [noun] over the last thirty years | 15 |
|
| 12 | [noun] over the last thirty [noun] | 15 |
|
| 13 | [noun] over the last thirty year | 15 |
|
