| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] [conj] a year | 179 |
|
| 2 | [prep] [adj] [conj] a [adv] | 87 |
|
| 3 | [adj] [conj] a year [adv] | 69 |
|
| 4 | [prep] [adj] a year [adv] | 23 |
|
