| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a longer period [conj] | 6 |
|
| 2 | over a longer [noun sg] [subord] | 5 |
|
| 3 | over a longer [noun sg] than | 5 |
|
| 4 | over a longer [noun sg] than | 5 |
|
