| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] over a longer period | 11 |
|
| 2 | [verb] over [art] longer period | 11 |
|
| 3 | [verb] over a longer period | 11 |
|
| 4 | [vb pp] over [art] longer period | 10 |
|
