| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a period of | 289 |
|
| 2 | place over a [noun] of | 13 |
|
| 3 | place over a [noun sg] of | 13 |
|
| 4 | place [prep] a period of | 11 |
|
| 5 | place [prep] a period of | 11 |
|
| 6 | place over [art] period of | 9 |
|
| 7 | place over [art] period of | 9 |
|
| 8 | place over a period of | 9 |
|
| 9 | place over a period of | 9 |
|
| 10 | place over a period of | 9 |
|
| 11 | place over a period [prep] | 9 |
|
