| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have happened a [adj] [noun] ago | 8 |
|
| 2 | [vb past] happened a [adj] [noun] ago | 7 |
|
| 3 | had happened a [adj] [noun] ago | 7 |
|
| 4 | [verb] happened a [adj] time ago | 5 |
|
| 5 | [verb] happened a long [noun] ago | 5 |
|
| 6 | [verb] happened a long [noun] ago | 5 |
|
| 7 | [verb] happened a [adj] [noun sg] ago | 5 |
|
| 8 | [verb] happened a [adj] time ago | 5 |
|
| 9 | [verb] happened a [adj] [noun] ago | 5 |
|
