| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] than once [prep] a | 11 |
|
| 2 | more than once [prep] a | 11 |
|
| 3 | [adv] than once [prep] a | 8 |
|
| 4 | [adv] than once in a | 6 |
|
