| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | once [prep] a [noun] | 416 |
|
| 2 | [adv] upon a [noun] | 206 |
|
| 3 | [adv] upon a [noun] | 194 |
|
| 4 | once upon [art] [noun] | 165 |
|
| 5 | once upon a [noun] | 163 |
|
