| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [noun sg] [adv] or [adv] a | 7 |
|
| 2 | [art] [noun sg] once or [adv] a | 7 |
|
| 3 | [art] [noun sg] once or [adv] a | 7 |
|
| 4 | [art] [noun sg] [adv] or twice a | 7 |
|
