No | Pattern | Freq | Relations |
---|---|---|---|
1 | [verb] up over a period | 7 | |
2 | [vb pp] up over a period | 5 | |
3 | build up over a period | 5 | |
4 | built up over a period | 5 | |
5 | up over a period of | 8 | |
6 | up over a period [prep] | 8 | |
7 | up over a period [prep] | 8 | |
8 | up over a period of | 8 |