| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] ago | 245 |
|
| 2 | [prep] a [noun sg] ago | 244 |
|
| 3 | over a [noun sg] [adv] | 110 |
|
| 4 | over a [noun] ago | 39 |
|
| 5 | over [art] [noun sg] ago | 39 |
|
| 6 | over a [noun sg] ago | 39 |
|
| 7 | over [art] [noun sg] ago | 39 |
|
| 8 | over a [noun sg] ago | 39 |
|
