| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] once a week | 49 |
|
| 2 | [prep] [adv] once a week | 49 |
|
| 3 | at [adv] once a week | 47 |
|
| 4 | at [adv] once a week | 47 |
|
| 5 | [verb] [adv] once a week | 32 |
|
| 6 | [noun] [adv] once a week | 16 |
|
| 7 | [vb base] [adv] once a week | 12 |
|
| 8 | [noun sg] [adv] once a week | 11 |
|
| 9 | go [adv] once a week | 7 |
|
| 10 | [vb infin] [adv] once a week | 6 |
|
| 11 | [vb pp] [adv] once a week | 5 |
|
| 12 | [noun pl] [adv] once a week | 5 |
|
| 13 | come [adv] once a week | 5 |
|
| 14 | [adv] [subord] once a week | 9 |
|
| 15 | [adv] [conj] once a week | 9 |
|
| 16 | [adv] than once a week | 8 |
|
| 17 | [adv] than once a week | 8 |
|
| 18 | [adv] [verb] once a week | 7 |
|
| 19 | [adv] once a week [prep] | 23 |
|
| 20 | [adv] once a week [prep] | 23 |
|
| 21 | [adv] once a week [conj] | 17 |
|
| 22 | [adv] once a week [coord] | 15 |
|
| 23 | [adv] once a week and | 10 |
|
| 24 | [adv] once a week and | 10 |
|
| 25 | [adv] once a week for | 8 |
|
| 26 | [adv] once a week for | 8 |
|
| 27 | [adv] once a week [verb] | 6 |
|
