SN4 ""

No	Pattern	Freq
1	over a [noun sg]	2604
2	over a [noun]	2521
3	over a period	682
4	over a period	682
5	over an [noun]	157
6	over a number	136
7	over a number	136
8	over a century	114
9	over a century	114
10	over a decade	71
11	over a decade	71
12	over a month	62
13	over a month	62
14	over a mile	58
15	over a mile	58
16	over a range	51
17	over a range	51
18	over a [n mass]	34
19	over a couple	25
20	over a couple	25
21	over a area	24
22	over a area	24
23	over a pan	23
24	over a pan	23
25	over a distance	22
26	over a [noun prp]	22
27	over a distance	22
28	over a cup	21
29	over a cup	21
30	over a series	18