| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty years [prep] [noun] [noun] | 10 |
|
| 2 | twenty years [prep] [noun] [noun] | 10 |
|
| 3 | twenty years [subord] [noun] [noun] | 7 |
|
| 4 | twenty years [adv] [noun] [noun] | 7 |
|
| 5 | twenty years [adv] [noun] [noun] | 7 |
|
| 6 | twenty years [conj] [noun] [noun] | 7 |
|
| 7 | twenty years ago [noun] [noun] | 6 |
|
| 8 | twenty years ago [noun] [noun] | 6 |
|
| 9 | twenty years of [noun] [noun] | 5 |
|
| 10 | twenty years of [noun] [noun] | 5 |
|
