| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | once [prep] a [noun sg] | 411 |
|
| 2 | [adv] upon a [noun sg] | 205 |
|
| 3 | [adv] upon a [noun sg] | 193 |
|
| 4 | once upon [art] [noun sg] | 165 |
|
| 5 | once upon a [noun sg] | 163 |
|
| 6 | once upon a [noun] | 163 |
|
