| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] over a [adj] period | 60 |
|
| 2 | [prep] [noun] over a [adj] period | 60 |
|
| 3 | in [noun] [prep] a [adj] period | 31 |
|
| 4 | in [noun] [prep] a [adj] period | 31 |
|
| 5 | in [noun] over a [adj] [noun] | 23 |
|
| 6 | in [noun] over a [adj] [noun sg] | 21 |
|
| 7 | in [noun] over [art] [adj] period | 14 |
|
| 8 | in [noun] over a [adj] period | 9 |
|
| 9 | in [noun] over a [adj] period | 9 |
|
| 10 | in [noun] over a [adj] period | 9 |
|
