| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] than once a | 32 |
|
| 2 | [adv] than once a | 32 |
|
| 3 | more than once a | 21 |
|
| 4 | more than once a | 21 |
|
| 5 | less than once a | 6 |
|
| 6 | less than once a | 6 |
|
| 7 | than once [prep] a | 11 |
|
| 8 | than once [prep] a | 11 |
|
| 9 | than once in a | 6 |
|
| 10 | than once in a | 6 |
|
| 11 | than once a [noun] | 31 |
|
| 12 | than once a [noun sg] | 30 |
|
| 13 | than once a month | 10 |
|
| 14 | than once a month | 10 |
|
| 15 | than once a week | 8 |
|
| 16 | than once a week | 8 |
|
| 17 | than once a year | 5 |
|
| 18 | than once a year | 5 |
|
