| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] over a [noun] | 306 |
|
| 2 | [vb pp] [prep] a period | 269 |
|
| 3 | [vb pp] [prep] a period | 269 |
|
| 4 | [vb pp] over [art] period | 107 |
|
| 5 | [vb pp] over [art] period | 107 |
|
| 6 | [verb] over a period | 83 |
|
| 7 | [vb pp] over a period | 78 |
|
| 8 | [vb pp] over a period | 78 |
|
