SN4 ""

No	Pattern	Freq
1	over a [noun sg]	2455
2	over a period	681
3	over a period	681
4	over a number	136
5	over a number	136
6	over a century	114
7	over a century	114
8	over a decade	71
9	over a decade	71
10	over a month	62
11	over a month	62
12	over a mile	58
13	over a mile	58
14	over a range	51
15	over a range	51
16	over a [n mass]	34
17	over a couple	25
18	over a couple	25
19	over a pan	23
20	over a pan	23
21	over a distance	22
22	over a distance	22
23	over a cup	21
24	over a cup	21
25	over a series	18
26	over a series	18
27	over a [noun prp]	17
28	over a weekend	15
29	over a weekend	15
30	over a fortnight	14