| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back a [det] [noun] | 61 |
|
| 2 | back a few [noun] | 55 |
|
| 3 | back a [det] [noun pl] | 55 |
|
| 4 | back a [det] years | 12 |
|
| 5 | back a [det] year | 12 |
|
| 6 | back a [det] inch | 9 |
|
| 7 | back a [det] inches | 9 |
|
| 8 | back a [det] [noun sg] | 6 |
|
| 9 | back a [det] days | 5 |
|
| 10 | back a [det] day | 5 |
|
