| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] the past [adj] years | 1159 |
|
| 2 | [noun] [prep] the [adj] 20 years | 150 |
|
| 3 | [noun] [prep] the past 20 [noun pl] | 72 |
|
| 4 | [noun] [prep] the past 20 [noun] | 72 |
|
| 5 | [noun] [prep] the past 20 years | 69 |
|
| 6 | [noun] [prep] [art] past 20 years | 69 |
|
| 7 | [noun] [prep] the past 20 year | 69 |
|
| 8 | [noun] [prep] [art] past 20 years | 69 |
|
