| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] a [adj] [noun] ago | 81 |
|
| 2 | [noun prp] a [adj] [noun pl] ago | 72 |
|
| 3 | [noun] a [adj] weeks ago | 70 |
|
| 4 | [noun prp] a [adj] weeks [adv] | 33 |
|
| 5 | [noun prp] [art] [adj] weeks ago | 19 |
|
| 6 | [noun prp] a [adj] week ago | 19 |
|
