| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun prp] a [adj] years ago | 17 |
|
| 2 | [prep] [noun prp] a [adj] years ago | 17 |
|
| 3 | in [noun prp] a [adj] years ago | 10 |
|
| 4 | in [noun prp] a [adj] years ago | 10 |
|
| 5 | [noun prp] [noun prp] a [adj] years ago | 6 |
|
| 6 | [noun] [noun prp] a [adj] years ago | 6 |
|
| 7 | [noun prp] [noun] a [adj] years ago | 8 |
|
| 8 | [noun prp] [verb] a [adj] years ago | 7 |
|
| 9 | [noun prp] [noun prp] a [adj] years ago | 6 |
|
| 10 | [noun prp] [vb past] a [adj] years ago | 5 |
|
| 11 | [noun prp] a [adj] years ago [prep] | 5 |
|
| 12 | [noun prp] a [adj] years ago [prep] | 5 |
|
