| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] a [adj] period | 177 |
|
| 2 | [prep] [noun] [prep] a [adj] period | 177 |
|
| 3 | [prep] [noun] over a [adj] [noun] | 161 |
|
| 4 | [prep] [noun] over a [adj] [noun sg] | 151 |
|
| 5 | [prep] [noun] over [art] [adj] period | 81 |
|
| 6 | [prep] [noun] over a [adj] period | 60 |
|
| 7 | [prep] [noun] over a [adj] period | 60 |
|
