| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] the [num ord] 20 years | 79 |
|
| 2 | [noun sg] [prep] the [adj] 20 years | 71 |
|
| 3 | [noun] [prep] the [adj] 20 years | 71 |
|
| 4 | [noun] [prep] the past 20 years | 69 |
|
| 5 | [noun] [prep] the past 20 years | 69 |
|
| 6 | [noun] over the [adj] 20 years | 64 |
|
| 7 | [noun pl] [prep] the [adj] 20 years | 59 |
|
| 8 | [noun] [prep] the last 20 years | 50 |
|
| 9 | [noun] [prep] the last 20 years | 50 |
|
| 10 | [noun] in the [adj] 20 years | 37 |
|
| 11 | [noun] [prep] the next 20 years | 28 |
|
| 12 | [noun] [prep] the next 20 years | 28 |
|
| 13 | [noun] for the [adj] 20 years | 24 |
|
| 14 | [noun prp] [prep] the [adj] 20 years | 18 |
|
| 15 | [noun] of the [adj] 20 years | 14 |
|
| 16 | [noun] during the [adj] 20 years | 9 |
|
