| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | or over [art] [adj] period | 5 |
|
| 2 | or over a [adj] period | 5 |
|
| 3 | or over [art] [adj] period | 5 |
|
| 4 | or over a [adj] period | 5 |
|
