| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] over [art] long period | 9 |
|
| 2 | [conj] over a long period | 9 |
|
| 3 | [conj] over a long period | 9 |
|
| 4 | [coord] over [art] long period | 7 |
|
