| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] over a period of | 49 |
|
| 2 | [prep] [noun prp] [prep] a period of | 15 |
|
| 3 | [prep] [noun prp] [prep] a period of | 15 |
|
| 4 | [prep] [noun prp] over a [noun sg] of | 11 |
|
| 5 | [prep] [noun prp] over a [noun] of | 11 |
|
| 6 | [prep] [noun prp] over [art] period of | 7 |
|
| 7 | [prep] [noun prp] over [art] period of | 7 |
|
| 8 | [prep] [noun prp] over a period of | 6 |
|
| 9 | [prep] [noun prp] over a period [prep] | 6 |
|
| 10 | [prep] [noun prp] over a period of | 6 |
|
| 11 | [prep] [noun prp] over a period of | 6 |
|
