| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] once a year | 73 |
|
| 2 | [adv] once a year | 69 |
|
| 3 | [noun] once a year | 53 |
|
| 4 | [verb] once a year | 43 |
|
| 5 | [noun sg] once a year | 36 |
|
| 6 | least once a year | 33 |
|
| 7 | least once a year | 33 |
|
| 8 | only once a year | 23 |
|
| 9 | only once a year | 23 |
|
| 10 | [vb pp] once a year | 21 |
|
| 11 | [conj] once a year | 21 |
|
| 12 | [pron] once a year | 15 |
|
| 13 | [pers pn] once a year | 13 |
|
| 14 | [coord] once a year | 12 |
|
| 15 | [noun pl] once a year | 10 |
|
| 16 | it once a year | 8 |
|
| 17 | it once a year | 8 |
|
| 18 | but once a year | 7 |
|
| 19 | [subord] once a year | 7 |
|
| 20 | but once a year | 7 |
|
| 21 | [adj] once a year | 7 |
|
| 22 | [vb base] once a year | 6 |
|
| 23 | update once a year | 6 |
|
| 24 | [be] once a year | 6 |
|
| 25 | be once a year | 6 |
|
| 26 | [vb -s] once a year | 5 |
|
| 27 | meet once a year | 5 |
|
| 28 | than once a year | 5 |
|
| 29 | [to-vb] once a year | 5 |
|
| 30 | than once a year | 5 |
|
