| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over the period [conj] | 10 |
|
| 2 | over [art] period [coord] | 8 |
|
| 3 | over [art] period and | 7 |
|
| 4 | over [art] period and | 7 |
|
| 5 | over a period [conj] | 6 |
|
