| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [det] year | 588 |
|
| 2 | [prep] [adv] [det] year | 234 |
|
| 3 | [prep] a [adv] [det] | 208 |
|
| 4 | a [adv] [det] year | 13 |
|
