| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] period [prep] [art] | 72 |
|
| 2 | over [art] period of [art] | 64 |
|
| 3 | over the period [prep] [art] | 43 |
|
| 4 | over the period [prep] [art] | 43 |
|
| 5 | over [art] period [prep] the | 37 |
|
| 6 | over [art] period [prep] a | 35 |
|
| 7 | over a period [prep] [art] | 29 |
|
| 8 | over a period [prep] [art] | 29 |
|
