| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a | 36357 |
|
| 2 | [prep] a week | 1699 |
|
| 3 | [adv] a week | 1401 |
|
| 4 | [adv] [prep] week | 84 |
|
