| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] once [prep] a | 49 |
|
| 2 | [verb] once [prep] a | 49 |
|
| 3 | [verb] [adv] upon a | 44 |
|
| 4 | [verb] [adv] upon a | 27 |
|
| 5 | [verb] once upon [art] | 5 |
|
| 6 | [verb] once upon a | 5 |
|
| 7 | [verb] once upon a | 5 |
|
