| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] a few [noun pl] back | 16 |
|
| 2 | [noun prp] a few [noun] back | 16 |
|
| 3 | [noun prp] a few year back | 14 |
|
| 4 | [noun prp] a few years back | 14 |
|
