| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [noun sg] once [art] | 11 |
|
| 2 | [det] [noun sg] once a | 9 |
|
| 3 | [det] [noun sg] once a | 9 |
|
| 4 | this [noun sg] once [art] | 5 |
|
