| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] twenty years ago | 19 |
|
| 2 | [noun] [adv] twenty years ago | 15 |
|
| 3 | [vb past] [adv] twenty years ago | 7 |
|
| 4 | [vb pp] [adv] twenty years ago | 6 |
|
| 5 | be [adv] twenty years ago | 6 |
|
| 6 | [be] [adv] twenty years ago | 6 |
|
| 7 | [noun prp] [adv] twenty years ago | 6 |
|
| 8 | [noun sg] [adv] twenty years ago | 6 |
|
| 9 | [adv] [conj] twenty years ago | 14 |
|
| 10 | [adv] than twenty years ago | 13 |
|
| 11 | [adv] than twenty years ago | 13 |
|
| 12 | [adv] [subord] twenty years ago | 13 |
|
| 13 | [adv] twenty [adj] years ago | 7 |
|
| 14 | [adv] twenty [num] years ago | 6 |
|
| 15 | [adv] twenty five years ago | 5 |
|
| 16 | [adv] twenty five years ago | 5 |
|
| 17 | [adv] twenty years ago [conj] | 6 |
|
