No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a [adj] period [prep] | 19 | |
2 | over a [adj] period [prep] | 19 | |
3 | over a [adj] period [prep] | 19 | |
4 | over a [adj] period of | 16 | |
5 | over a [adj] period of | 16 | |
6 | over a long period [prep] | 9 | |
7 | over a long period [prep] | 9 |