No | Pattern | Freq | Relations |
---|---|---|---|
1 | [adv] [prep] a period [prep] time | 31 | |
2 | [adv] [prep] a period of time | 31 | |
3 | [adv] [prep] a period of time | 31 | |
4 | [adv] over a period [prep] time | 22 | |
5 | [adv prt] [prep] a period [prep] time | 15 | |
6 | [adv] [prep] a period [prep] time | 15 | |
7 | [adv] for a period [prep] time | 5 | |
8 | up [prep] a period [prep] time | 5 | |
9 | up [prep] a period [prep] time | 5 |