| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it once a [noun sg] | 24 |
|
| 2 | [pers pn] once a week | 19 |
|
| 3 | [pers pn] once a month | 14 |
|
| 4 | [pers pn] once a year | 13 |
|
| 5 | them once a [noun sg] | 10 |
|
| 6 | him once a [noun sg] | 6 |
|
| 7 | her once a [noun sg] | 5 |
|
