| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] [adv] once a [noun] | 48 |
|
| 2 | [verb] [prep] [adv] once a [noun] | 36 |
|
| 3 | [noun sg] [prep] [adv] once a [noun] | 34 |
|
| 4 | [vb pp] [prep] [adv] once a [noun] | 20 |
|
| 5 | [noun pl] [prep] [adv] once a [noun] | 10 |
|
| 6 | [conj] [prep] [adv] once a [noun] | 9 |
|
| 7 | [pron] [prep] [adv] once a [noun] | 8 |
|
| 8 | [coord] [prep] [adv] once a [noun] | 7 |
|
| 9 | [adv] [prep] [adv] once a [noun] | 6 |
|
| 10 | [pers pn] [prep] [adv] once a [noun] | 6 |
|
| 11 | [to-vb] [prep] [adv] once a [noun] | 5 |
|
| 12 | [prep] [adv] once [prep] a [noun] | 6 |
|
| 13 | [prep] [adv] once [prep] a [noun] | 6 |
|
| 14 | [prep] [adv] once a [noun] [conj] | 18 |
|
| 15 | [prep] [adv] once a [noun] [coord] | 16 |
|
| 16 | [prep] [adv] once a [noun] [prep] | 14 |
|
| 17 | [prep] [adv] once a [noun] and | 14 |
|
| 18 | [prep] [adv] once a [noun] [prep] | 14 |
|
| 19 | [prep] [adv] once a [noun] and | 14 |
|
| 20 | [prep] [adv] once a [noun] [pron] | 6 |
|
| 21 | [prep] [adv] once a [noun] [verb] | 5 |
|
| 22 | [prep] [adv] once a [noun] [pers pn] | 5 |
|
