| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a week at [art] time | 6 |
|
| 2 | for a week at [art] time | 6 |
|
| 3 | [prep] a week at [art] time | 6 |
|
| 4 | for a week at [art] time | 6 |
|
