| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] once [prep] [art] | 13 |
|
| 2 | [adv] at once [prep] [art] | 12 |
|
| 3 | [adv] [prep] once [prep] the | 8 |
|
| 4 | almost [prep] once [prep] [art] | 8 |
|
| 5 | [adv] [prep] once [prep] the | 8 |
|
