| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and [prep] a period | 38 |
|
| 2 | and [prep] a period | 38 |
|
| 3 | and over a [noun] | 37 |
|
| 4 | and over a [noun sg] | 33 |
|
| 5 | [conj] over a period | 29 |
|
| 6 | and over [art] period | 16 |
|
| 7 | and over [art] period | 16 |
|
| 8 | and over a period | 14 |
|
| 9 | and over a period | 14 |
|
| 10 | and over a period | 14 |
|
