| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] a [adj] period | 141 |
|
| 2 | [prep] [noun] [prep] a [adj] period | 141 |
|
| 3 | [prep] [noun] over a [adj] [noun] | 122 |
|
| 4 | [prep] [noun] over [art] [adj] period | 61 |
|
| 5 | [prep] [noun] over [art] [adj] period | 61 |
|
| 6 | [prep] [noun] over a [adj] period | 58 |
|
| 7 | [prep] [noun] over a [adj] period | 53 |
|
| 8 | [prep] [noun] over a [adj] period | 51 |
|
| 9 | [prep] [noun] over a [adj] period | 51 |
|
