| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [adv] a week | 57 |
|
| 2 | [noun pl] once a week | 26 |
|
| 3 | [noun pl] once a week | 26 |
|
| 4 | [noun pl] twice a week | 20 |
|
| 5 | [noun pl] twice a week | 20 |
|
| 6 | hours [adv] a week | 5 |
|
