| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] over a [adj] period | 43 |
|
| 2 | [adv] over a [adj] period | 40 |
|
| 3 | [adv] over a [adj] period | 29 |
|
| 4 | [adv] over a long period | 22 |
|
| 5 | [adv] over a long period | 18 |
|
| 6 | [adv prt] over a [adj] period | 15 |
|
| 7 | out over a [adj] period | 7 |
|
| 8 | out over a [adj] period | 7 |
|
| 9 | in over a [adj] period | 5 |
|
| 10 | in over a [adj] period | 5 |
|
