| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [num] | 70003 |
|
| 2 | [prep] [art] year | 10930 |
|
| 3 | [art] [num] year | 1626 |
|
| 4 | [prep] [num] year | 1221 |
|
