| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] than once a month | 9 |
|
| 2 | less than once a month | 6 |
|
| 3 | less than once a [noun] | 6 |
|
| 4 | less than once [art] month | 6 |
|
| 5 | less [conj] once a month | 6 |
|
| 6 | less than once a month | 6 |
|
| 7 | less than once [art] month | 6 |
|
| 8 | less than [adv] a month | 6 |
|
| 9 | less than once a [noun sg] | 6 |
|
| 10 | less than [adv] a month | 6 |
|
| 11 | less than once a month | 6 |
|
