| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [noun] [prep] [noun] | 686 |
|
| 2 | [prep] a period [prep] [noun] | 607 |
|
| 3 | [prep] a period [prep] [noun] | 607 |
|
| 4 | over [art] period [prep] [noun] | 316 |
|
| 5 | over [art] period [prep] [noun] | 316 |
|
| 6 | over a period [prep] [noun] | 297 |
|
| 7 | over a period [prep] [noun] | 296 |
|
| 8 | over a period [prep] [noun] | 296 |
|
