| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] the past 30 years | 47 |
|
| 2 | [noun] over the past 30 years | 25 |
|
| 3 | [noun] over the past 30 years | 25 |
|
| 4 | [noun sg] [prep] the past 30 years | 22 |
|
| 5 | [noun pl] [prep] the past 30 years | 18 |
|
| 6 | [noun] for the past 30 years | 7 |
|
| 7 | [noun] for the past 30 years | 7 |
|
| 8 | [noun] in the past 30 years | 7 |
|
| 9 | [noun] in the past 30 years | 7 |
|
| 10 | [noun prp] [prep] the past 30 years | 6 |
|
| 11 | [noun] of the past 30 years | 5 |
|
| 12 | [noun] of the past 30 years | 5 |
|
