| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a period | 506 |
|
| 2 | [verb] [prep] a period | 506 |
|
| 3 | [verb] over a [noun] | 375 |
|
| 4 | [verb] over [art] period | 126 |
|
| 5 | [verb] over [art] period | 126 |
|
| 6 | [verb] over a period | 83 |
|
| 7 | [verb] over a period | 83 |
|
