| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | twenty [noun pl] ago [noun] | 10 |
|
| 2 | twenty years ago [noun] | 10 |
|
| 3 | twenty [noun pl] ago [noun] | 10 |
|
| 4 | twenty [noun pl] ago [noun prp] | 5 |
|
