| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] [adj] period of | 160 |
|
| 2 | over [art] period of [noun pl] | 110 |
|
| 3 | [art] [adj] period of [noun pl] | 17 |
|
| 4 | over [art] [adj] of [noun pl] | 7 |
|
