No | Pattern | Freq | Relations |
---|---|---|---|
1 | of [noun] over a [adj] period | 30 | |
2 | of [noun sg] over a [adj] period | 18 | |
3 | of [noun] over a long period | 18 | |
4 | of [noun] over a long period | 14 | |
5 | of [noun pl] over a [adj] period | 11 | |
6 | of [noun] over a [adj -er] period | 5 |