| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] at once a | 29 |
|
| 2 | be at once a | 29 |
|
| 3 | is at once a | 16 |
|
| 4 | [is] at once a | 16 |
|
| 5 | [det] at once a | 12 |
|
| 6 | all at once a | 12 |
|
| 7 | [adj] at once a | 12 |
|
| 8 | all at once a | 12 |
|
| 9 | [verb] at once a | 8 |
|
| 10 | [was/were] at once a | 7 |
|
| 11 | [adv] at once a | 6 |
|
| 12 | almost at once a | 6 |
|
| 13 | was at once a | 6 |
|
| 14 | [adv] at once a | 6 |
|
| 15 | almost at once a | 6 |
|
| 16 | at least once a | 118 |
|
| 17 | at [adv] once a | 118 |
|
| 18 | at [adv] once a | 118 |
|
| 19 | at least once a | 118 |
|
| 20 | at once [prep] a | 50 |
|
| 21 | at once [prep] a | 50 |
|
| 22 | at once [verb] a | 20 |
|
| 23 | at once in a | 9 |
|
| 24 | at once in a | 9 |
|
| 25 | at once with a | 8 |
|
| 26 | at once with a | 8 |
|
| 27 | at once [vb pp] a | 7 |
|
| 28 | at once to a | 7 |
|
| 29 | at once to a | 7 |
|
| 30 | at once into a | 6 |
|
