| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over the [adj] six years | 12 |
|
| 2 | [noun] over the [num ord] six years | 12 |
|
| 3 | [noun sg] over the [adj] six years | 11 |
|
| 4 | [noun] over the past six years | 10 |
|
| 5 | [noun pl] over the [adj] six years | 10 |
|
| 6 | [noun] over the past six years | 10 |
|
| 7 | [noun] over the last six years | 8 |
|
| 8 | [noun] over the last six years | 8 |
|
