| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period | 1646 |
|
| 2 | [prep] a [adj] period | 1646 |
|
| 3 | over a [adj] [noun] | 1421 |
|
| 4 | over a [adj] [noun sg] | 1383 |
|
| 5 | over [art] [adj] period | 603 |
|
| 6 | over [art] [adj] period | 603 |
|
| 7 | over a [adj] period | 519 |
|
| 8 | over a [adj] period | 488 |
|
| 9 | over a [adj] period | 462 |
|
| 10 | over a [adj] period | 462 |
|
