| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [n mass] [prep] [art] period | 10 |
|
| 2 | [verb] [n mass] [prep] the period | 8 |
|
| 3 | [verb] [n mass] [prep] the period | 8 |
|
| 4 | [verb] data [prep] [art] period | 5 |
|
| 5 | [verb] [n mass] for [art] period | 5 |
|
