| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a longer period [prep] time | 6 |
|
| 2 | over [art] longer period [prep] time | 6 |
|
| 3 | over [art] longer period [prep] time | 6 |
|
| 4 | over [art] longer period [prep] time | 6 |
|
| 5 | over a longer period [prep] time | 6 |
|
| 6 | over [art] longer period of time | 6 |
|
