| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] over a period [prep] [noun] | 19 |
|
| 2 | [conj] [prep] a period [prep] time | 18 |
|
| 3 | [conj] [prep] a period [prep] time | 18 |
|
| 4 | [conj] over a period [prep] time | 14 |
|
| 5 | [conj] over a [noun sg] [prep] time | 14 |
|
| 6 | [conj] over a period [prep] time | 14 |
|
| 7 | [conj] over a period [prep] time | 14 |
|
| 8 | [conj] over [art] period [prep] time | 14 |
|
| 9 | [conj] over a [noun] [prep] time | 14 |
|
| 10 | [conj] over [art] period [prep] time | 14 |
|
| 11 | [conj] over a period [prep] time | 14 |
|
