| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at once [prep] [art] [noun sg] | 73 |
|
| 2 | [prep] once [prep] the [noun sg] | 54 |
|
| 3 | [prep] once [prep] a [noun sg] | 30 |
|
| 4 | [prep] once to [art] [noun sg] | 20 |
|
| 5 | [prep] once in [art] [noun sg] | 18 |
|
| 6 | for once [prep] [art] [noun sg] | 10 |
|
| 7 | [prep] once by [art] [noun sg] | 8 |
|
| 8 | [prep] once from [art] [noun sg] | 7 |
|
| 9 | [prep] once into [art] [noun sg] | 6 |
|
| 10 | [prep] once with [art] [noun sg] | 5 |
|
