| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [noun] over a period [prep] | 52 |
|
| 2 | a [noun] over a [noun] [prep] | 50 |
|
| 3 | a [noun] over a [noun sg] [prep] | 48 |
|
| 4 | a [noun] [prep] a period [prep] | 33 |
|
| 5 | a [noun] [prep] a period [prep] | 33 |
|
| 6 | a [noun] over [art] period [prep] | 13 |
|
| 7 | a [noun] over [art] period [prep] | 13 |
|
| 8 | a [noun] over a period [prep] | 11 |
|
| 9 | a [noun] over a period [prep] | 11 |
|
| 10 | a [noun] over a period [prep] | 11 |
|
