No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a [adj] period [prep] | 183 | |
2 | over a [adj] period [prep] | 173 | |
3 | [prep] a long period [prep] | 162 | |
4 | [prep] a long period [prep] | 162 | |
5 | over a long period [prep] | 93 | |
6 | over [art] long period [prep] | 87 | |
7 | over a long [noun] [prep] | 86 | |
8 | over a long period [prep] | 85 | |
9 | over a long period [prep] | 85 |