No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] a long period of [noun sg] | 123 | |
2 | [prep] a long period of [noun] | 116 | |
3 | [prep] a long period of time | 98 | |
4 | [prep] a long period of time | 98 | |
5 | over a long period of [noun] | 81 | |
6 | for a long period of [noun] | 20 | |
7 | [prep] a longer period of [noun] | 11 | |
8 | after a long period of [noun] | 10 |