| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at least once a week | 47 |
|
| 2 | [prep] least once a week | 47 |
|
| 3 | [prep] least once a week | 47 |
|
| 4 | at least once a week | 47 |
|
| 5 | least once a week [conj] | 9 |
|
| 6 | least once a week [coord] | 8 |
|
| 7 | least once a week and | 7 |
|
| 8 | least once a week and | 7 |
|
