| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] period [prep] | 3127 |
|
| 2 | [noun pl] [prep] [art] period | 851 |
|
| 3 | [noun pl] [prep] [art] [prep] | 159 |
|
| 4 | [noun pl] [art] period [prep] | 9 |
|
