| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] over a period | 69 |
|
| 2 | [adv] over [art] period | 49 |
|
| 3 | [adv prt] over [art] period | 33 |
|
| 4 | [adv] over the period | 14 |
|
| 5 | up over [art] period | 11 |
|
| 6 | up over [art] period | 11 |
|
| 7 | gradually over [art] period | 7 |
|
| 8 | gradually over [art] period | 7 |
|
| 9 | out over [art] period | 6 |
|
| 10 | out over [art] period | 6 |
|
