| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] period [prep] [art] [noun] | 405 |
|
| 2 | over [art] period [prep] [noun] | 316 |
|
| 3 | over [art] period [prep] [art] | 72 |
|
| 4 | over [art] [prep] [art] [noun] | 5 |
|
| 5 | over [art] period [art] [noun] | 5 |
|
