| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over [art] longer period of | 5 |
|
| 2 | [noun] over a longer period [prep] | 5 |
|
| 3 | [noun] over [art] longer period [prep] | 5 |
|
| 4 | [noun] over a longer period [prep] | 5 |
|
