| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] longer period [prep] [noun sg] | 11 |
|
| 2 | [prep] [art] longer period [prep] [noun sg] | 11 |
|
| 3 | over [art] longer period [prep] [noun sg] | 6 |
|
| 4 | over [art] longer period [prep] [noun sg] | 6 |
|
