No | Pattern | Freq | Relations |
---|---|---|---|
1 | be [adv] [vb pp] over a period | 6 | |
2 | [be] [adv] [vb pp] over a period | 6 | |
3 | [adv] [vb pp] over a period [prep] | 8 | |
4 | [adv] [vb pp] over a period [prep] | 8 | |
5 | [adv] [vb pp] over a period of | 8 | |
6 | [adv] [vb pp] over a period of | 8 |