| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] | 430262 |
|
| 2 | [prep] [art] year | 14198 |
|
| 3 | [prep] [art] year | 14198 |
|
| 4 | [prep] a year | 1994 |
|
