No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] a period | 2137 | |
2 | over a period | 681 | |
3 | for a period | 517 | |
4 | in a period | 180 | |
5 | after a period | 175 | |
6 | during a period | 110 | |
7 | of a period | 74 | |
8 | to a period | 63 | |
9 | through a period | 55 | |
10 | with a period | 54 | |
11 | within a period | 50 | |
12 | as a period | 41 | |
13 | by a period | 37 | |
14 | from a period | 27 | |
15 | at a period | 17 | |
16 | on a period | 13 | |
17 | into a period | 11 | |
18 | before a period | 6 | |
19 | about a period | 6 |