| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] over a number of | 10 |
|
| 2 | [vb pp] [adv] over a number of | 7 |
|
| 3 | [adv] over a number of [noun pl] | 11 |
|
| 4 | [adv] over a number of [noun] | 11 |
|
| 5 | [adv] over a number of years | 9 |
|
| 6 | [adv] over a number of year | 9 |
|
