| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] period | 5697 |
|
| 2 | [art] period [prep] | 4764 |
|
| 3 | [prep] [art] [prep] | 2077 |
|
| 4 | [prep] period [prep] | 370 |
|
