| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | happened a long [noun] ago | 5 |
|
| 2 | happened a [adj] [noun] ago | 5 |
|
| 3 | happened a [adj] time ago | 5 |
|
| 4 | happened a [adj] [noun sg] ago | 5 |
|
| 5 | happened a [adj] time ago | 5 |
|
