| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb pp] over [art] period | 10 |
|
| 2 | [noun pl] [verb] over [art] period | 10 |
|
| 3 | [noun pl] [verb] over a period | 7 |
|
| 4 | [noun pl] [verb] over a period | 7 |
|
