| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] once [art] month | 63 |
|
| 2 | [adv] [conj] once [art] | 56 |
|
| 3 | [adv] [conj] [art] month | 36 |
|
| 4 | [conj] once [art] month | 19 |
|
