| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [conj] once [prep] a | 7 |
|
| 2 | [adv] [conj] once [prep] a [noun] | 7 |
|
| 3 | [adv] [conj] once [prep] a [noun sg] | 6 |
|
