| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a [adv] long [noun] | 10 |
|
| 2 | [noun] over a [adv] long [noun sg] | 10 |
|
| 3 | [noun] over a [adv] long period | 8 |
|
| 4 | [noun] over a [adv] long period | 8 |
|
