| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun pl] [adv] a year | 9 |
|
| 2 | [adj] [noun pl] twice a [noun sg] | 8 |
|
| 3 | [adj] [noun pl] once a [noun sg] | 7 |
|
| 4 | [adj] [noun pl] [adv] a week | 5 |
|
