| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] [adj] period [prep] | 232 |
|
| 2 | over [art] [adj] year period | 94 |
|
| 3 | [art] [adj] year period [prep] | 40 |
|
| 4 | over [art] [adj] year [prep] | 33 |
|
