| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [adj] [noun] | 499 |
|
| 2 | over a [adj] [noun sg] | 496 |
|
| 3 | [adv] a [adj] period | 147 |
|
| 4 | over a [adj] period | 79 |
|
| 5 | over [art] [adj] period | 79 |
|
| 6 | over a [adj] period | 77 |
|
