| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] and over a [noun] | 21 |
|
| 2 | [noun] and [prep] a period | 17 |
|
| 3 | [noun] and over a [noun sg] | 17 |
|
| 4 | [noun] and [prep] a period | 17 |
|
| 5 | [noun] [conj] over a period | 8 |
|
| 6 | [noun] [coord] over a period | 7 |
|
| 7 | [noun] and over [art] period | 5 |
|
| 8 | [noun] and over a period | 5 |
|
| 9 | [noun] and over a period | 5 |
|
| 10 | [noun] and over a period | 5 |
|
