| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] once [art] month | 63 |
|
| 2 | [adv] than once [art] | 44 |
|
| 3 | [adv] than [art] month | 28 |
|
| 4 | than once [art] month | 10 |
|
