| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] [noun] [prep] week [prep] a | 6 |
|
| 2 | [num] [noun pl] [prep] week [prep] a | 6 |
|
| 3 | [num] [noun] per week [prep] a | 6 |
|
| 4 | [num] [noun] per week [prep] a | 6 |
|
