| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] [adj] period of | 160 |
|
| 2 | [vb pp] over [art] [adj] period | 106 |
|
| 3 | [vb pp] over [art] period of | 76 |
|
| 4 | [vb pp] [art] [adj] period of | 20 |
|
