No | Pattern | Freq | Relations |
---|---|---|---|
1 | [noun] over a period of [adv] | 17 | |
2 | [noun sg] over a period of [adv] | 14 | |
3 | [verb] over a period of [adv] | 7 | |
4 | [vb pp] over a period of [adv] | 6 | |
5 | over a period of at [adv] | 12 | |
6 | over a period of [prep] [adv] | 12 | |
7 | over a period of at [adv] | 12 | |
8 | over a period of [prep] [adv] | 12 | |
9 | over a period of [adv] [adj] | 25 | |
10 | over a period of [adv] [num] | 24 | |
11 | over a period of [adv] [conj] | 9 | |
12 | over a period of [adv] than | 9 | |
13 | over a period of [adv] [subord] | 9 | |
14 | over a period of [adv] than | 9 | |
15 | over a period of [adv] twenty | 5 | |
16 | over a period of [adv] twenty | 5 |