No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a period of | 617 | |
2 | for a period of | 339 | |
3 | after a period of | 128 | |
4 | in a period of | 119 | |
5 | during a period of | 72 | |
6 | within a period of | 47 | |
7 | through a period of | 46 | |
8 | of a period of | 44 | |
9 | with a period of | 40 | |
10 | by a period of | 33 | |
11 | to a period of | 32 | |
12 | as a period of | 31 | |
13 | from a period of | 16 | |
14 | on a period of | 8 | |
15 | into a period of | 8 | |
16 | at a period of | 5 |