| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | or [adv] a year | 51 |
|
| 2 | or [adv] a year | 51 |
|
| 3 | or [adv] a year | 51 |
|
| 4 | or twice a year | 33 |
|
| 5 | or more a year | 8 |
|
| 6 | or so a year | 5 |
|
