| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | about [num] [noun] a year | 61 |
|
| 2 | about [adj] [noun] a year | 61 |
|
| 3 | about [adj] [noun pl] a year | 53 |
|
| 4 | about [adj] [n mass] a year | 7 |
|
| 5 | about [adj] times a year | 6 |
|
| 6 | about [adj] time a year | 6 |
|
