No | Pattern | Freq | Relations |
---|---|---|---|
1 | once [prep] a [noun] [art] | 18 | |
2 | once [prep] a [noun sg] [art] | 18 | |
3 | [adv] [prep] a time [art] | 13 | |
4 | once [prep] a time [art] | 11 | |
5 | once [prep] [art] time [art] | 11 | |
6 | once [prep] [art] time [art] | 11 | |
7 | once [prep] a time [art] | 11 |