| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] over a long period | 34 |
|
| 2 | [noun pl] over [art] long period | 34 |
|
| 3 | [noun pl] over a long period | 34 |
|
| 4 | [noun pl] over [art] long period | 24 |
|
| 5 | [noun pl] over [art] longer period | 10 |
|
