| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a [noun] | 1181 |
|
| 2 | [noun] over a [noun sg] | 1145 |
|
| 3 | [noun] [prep] a period | 833 |
|
| 4 | [noun] over [art] period | 482 |
|
| 5 | [noun] over a period | 311 |
|
