| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [conj] once a | 38 |
|
| 2 | [adv] [conj] once a | 37 |
|
| 3 | [noun] [conj] once a | 35 |
|
| 4 | [noun sg] [conj] once a | 26 |
|
| 5 | [verb] [conj] once a | 23 |
|
| 6 | more [conj] once a | 21 |
|
| 7 | more [conj] once a | 21 |
|
| 8 | [vb -s] [conj] once a | 10 |
|
| 9 | [adj] [conj] once a | 9 |
|
| 10 | [adj] [conj] once a | 7 |
|
| 11 | less [conj] once a | 6 |
|
| 12 | often [conj] once a | 6 |
|
| 13 | often [conj] once a | 6 |
|
| 14 | less [conj] once a | 6 |
|
| 15 | [noun pl] [conj] once a | 5 |
|
| 16 | [conj] [adv] once a | 12 |
|
| 17 | [conj] [adv] once a | 11 |
|
| 18 | [conj] [verb] once a | 10 |
|
| 19 | [conj] [noun] once a | 8 |
|
| 20 | [conj] [be] once a | 6 |
|
| 21 | [conj] be once a | 6 |
|
| 22 | [conj] [was/were] once a | 6 |
|
| 23 | [conj] [noun sg] once a | 5 |
|
| 24 | [conj] was once a | 5 |
|
| 25 | [conj] [prep] once a | 5 |
|
| 26 | [conj] [prep] once a | 5 |
|
| 27 | [conj] once [prep] a | 33 |
|
| 28 | [conj] once [prep] a | 33 |
|
| 29 | [conj] once [verb] a | 22 |
|
| 30 | [conj] once in a | 20 |
|
