| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] over a period | 56 |
|
| 2 | of [noun] over a [noun] | 53 |
|
| 3 | of [noun] over a [noun sg] | 51 |
|
| 4 | of [noun] [prep] a period | 47 |
|
| 5 | of [noun] [prep] a period | 47 |
|
| 6 | of [noun] over [art] period | 37 |
|
| 7 | of [noun] over [art] period | 37 |
|
| 8 | of [noun] over a period | 20 |
|
| 9 | of [noun] over a period | 20 |
|
| 10 | of [noun] over a period | 20 |
|
