| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] [noun] twice a | 6 |
|
| 2 | [prep] [num] [noun] twice a | 6 |
|
| 3 | [num] [noun] twice a [noun sg] | 19 |
|
| 4 | [num] [noun] twice a [noun] | 19 |
|
| 5 | [num] [noun] twice a day | 11 |
|
| 6 | [num] [noun] twice a day | 11 |
|
| 7 | [num] [noun] twice a week | 6 |
|
| 8 | [num] [noun] twice a week | 6 |
|
