| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a [det] days | 135 |
|
| 2 | [adv prt] [prep] a [det] days | 48 |
|
| 3 | back [prep] a [det] [noun] | 27 |
|
| 4 | back [prep] a [det] [noun pl] | 25 |
|
| 5 | back [prep] [art] [det] days | 6 |
|
| 6 | back [prep] a [det] day | 6 |
|
| 7 | back [prep] a [adj] days | 6 |
|
| 8 | back [prep] a [det] days | 6 |
|
