| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [adv] a year | 58 |
|
| 2 | be [verb] twice a [noun] | 29 |
|
| 3 | be [verb] twice [art] year | 11 |
|
| 4 | [be] [verb] twice a year | 11 |
|
