| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [noun] over a period of | 12 |
|
| 2 | [pos pn] [noun] over a period of | 12 |
|
| 3 | their [noun] over a [noun] of | 12 |
|
| 4 | their [noun] over a [noun sg] of | 12 |
|
| 5 | their [noun] [prep] a period of | 9 |
|
| 6 | their [noun] [prep] a period of | 9 |
|
| 7 | their [noun] over [art] period of | 6 |
|
| 8 | their [noun] over [art] period of | 6 |
|
| 9 | their [noun] over a period [prep] | 5 |
|
| 10 | their [noun] over a period of | 5 |
|
| 11 | their [noun] over a period of | 5 |
|
| 12 | their [noun] over a period of | 5 |
|
| 13 | their [noun] over a period of | 5 |
|
