| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over [adj] period | 125 |
|
| 2 | [noun] [prep] long period | 120 |
|
| 3 | [noun] [prep] long period | 120 |
|
| 4 | [noun] over [adj] period | 50 |
|
| 5 | [noun] over long [noun] | 46 |
|
| 6 | [noun] over long period | 27 |
|
| 7 | [noun] over long period | 23 |
|
