| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over long [noun pl] of | 15 |
|
| 2 | [noun] over long period of | 13 |
|
| 3 | [noun] over long periods of | 13 |
|
| 4 | [noun sg] over long [noun] of | 7 |
|
| 5 | [noun pl] over long [noun] of | 6 |
|
