| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] over [art] period [prep] | 62 |
|
| 2 | [verb] over [art] long period | 28 |
|
| 3 | [verb] [art] long period [prep] | 25 |
|
| 4 | over [art] long period [prep] | 9 |
|
