| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] over [art] [adj] period | 107 |
|
| 2 | [vb pp] over [art] long period | 44 |
|
| 3 | [vb pp] [prep] [art] longer period | 14 |
|
| 4 | [vb pp] over [art] longer [noun] | 12 |
|
| 5 | [vb pp] over [art] [adj -er] period | 12 |
|
| 6 | [verb] over [art] longer period | 11 |
|
