| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] year [unc] | 820 |
|
| 2 | [prep] a [det] year | 588 |
|
| 3 | [prep] a year [unc] | 136 |
|
| 4 | a [det] year [unc] | 46 |
|
| 5 | [prep] a [det] [unc] | 17 |
|
