| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty years [adv] [art] | 27 |
|
| 2 | twenty years [adv] [art] | 26 |
|
| 3 | twenty years [adv] the | 21 |
|
| 4 | twenty years ago [art] | 18 |
|
| 5 | twenty years ago [art] | 18 |
|
| 6 | twenty years [adv] a | 6 |
|
| 7 | twenty years later [art] | 5 |
|
| 8 | twenty years later [art] | 5 |
|
