No | Pattern | Freq | Relations |
---|---|---|---|
1 | [verb] [adv] over a period [prep] | 31 | |
2 | [verb] [adv] over a period [prep] | 31 | |
3 | [verb] [adv] over a period of | 31 | |
4 | [verb] [adv prt] over a period [prep] | 19 | |
5 | [vb pp] [adv] over a period [prep] | 16 | |
6 | [verb] [adv] over a period [prep] | 11 | |
7 | [verb] up over a period [prep] | 6 | |
8 | [verb] up over a period [prep] | 6 |