| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] days or [noun] | 10 |
|
| 2 | [prep] a [adj] [noun pl] or week | 9 |
|
| 3 | [prep] [art] [adj] days or week | 9 |
|
| 4 | [prep] a [adj] day or week | 9 |
|
| 5 | [prep] a [adj] [noun] or week | 9 |
|
| 6 | [prep] a [adj] days [conj] week | 9 |
|
