| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] long period | 235 |
|
| 2 | [adv] over [art] period | 83 |
|
| 3 | [adv] [art] long period | 45 |
|
| 4 | [adv] over [art] long | 29 |
|
| 5 | [adv] over long period | 6 |
|
