| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over [art] long period | 121 |
|
| 2 | [verb] over [art] long period | 46 |
|
| 3 | [verb] [noun] over [art] period | 23 |
|
| 4 | [verb] [noun] over [art] long | 14 |
|
