| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty years [adv] [prep] the [noun] | 7 |
|
| 2 | twenty years [adv] [prep] the [noun] | 7 |
|
| 3 | twenty years [adv] in the [noun] | 5 |
|
| 4 | twenty years [adv] in the [noun] | 5 |
|
