| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] long period | 235 |
|
| 2 | [adj] [art] long period | 13 |
|
| 3 | over [adj] [art] long | 8 |
|
| 4 | over [adj] [art] period | 5 |
|
