| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [adj] years ago | 274 |
|
| 2 | [conj] twenty years ago | 26 |
|
| 3 | [subord] twenty years [adv] | 26 |
|
| 4 | [subord] twenty [noun] ago | 15 |
|
| 5 | [subord] twenty [noun pl] ago | 15 |
|
| 6 | [subord] twenty year ago | 15 |
|
