| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] period [prep] | 3127 |
|
| 2 | [verb] [prep] [art] period | 949 |
|
| 3 | [verb] [art] period [prep] | 526 |
|
| 4 | [verb] [prep] [art] [prep] | 450 |
|
| 5 | [verb] [prep] period [prep] | 6 |
|
