| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] than a [noun sg] | 1597 |
|
| 2 | [adv] once a [noun sg] | 297 |
|
| 3 | [adv] than once a | 32 |
|
| 4 | than once a [noun sg] | 30 |
|
