| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] a [adj] years ago | 30 |
|
| 2 | [noun prp] a [adj] years ago | 30 |
|
| 3 | [noun prp] a few years ago | 29 |
|
| 4 | [noun prp] a few years ago | 29 |
|
| 5 | [noun prp] a [det] years ago | 29 |
|
