No | Pattern | Freq | Relations |
---|---|---|---|
1 | [noun] over a long period [prep] | 50 | |
2 | [noun] over a long period of | 45 | |
3 | [noun] over a long period [prep] | 45 | |
4 | [noun sg] over a long period [prep] | 41 | |
5 | [noun pl] over a long period [prep] | 8 | |
6 | [noun] over a longer period [prep] | 5 |