| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] once or [adv] a | 6 |
|
| 2 | [pron] once or [adv] [art] | 6 |
|
| 3 | [pron] once [coord] [adv] a | 6 |
|
| 4 | [pron] once [conj] [adv] a | 6 |
|
| 5 | [pron] [adv] or [adv] a | 6 |
|
| 6 | [pron] once or [adv] a | 6 |
|
