| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a [adj] period of | 57 |
|
| 2 | [adv] over a [adj] [noun] of | 22 |
|
| 3 | [adv] over a [adj] [noun sg] of | 22 |
|
| 4 | [adv] over a [adj] period [prep] | 18 |
|
| 5 | [adv] over [art] [adj] period of | 15 |
|
| 6 | [adv] over [art] [adj] period of | 15 |
|
| 7 | [adv] over a [adj] period of | 13 |
|
| 8 | [adv] over a [adj] period of | 12 |
|
