| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] year | 7303 |
|
| 2 | [prep] [art] [adj] period | 5141 |
|
| 3 | [art] [adj] year period | 200 |
|
| 4 | [prep] [adj] year period | 10 |
|
