| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [det] days before | 6 |
|
| 2 | [prep] a [adj] days before | 6 |
|
| 3 | [prep] a few days before | 6 |
|
| 4 | [prep] a [adj] days before | 6 |
|
| 5 | [prep] a few days before | 6 |
|
