SN4 ""

No	Pattern	Freq
1	[prep] the past [num] years	2117
2	over the [adj] [num] years	886
3	in the [adj] [num] years	607
4	for the [adj] [num] years	602
5	[prep] the [adj] two years	397
6	[prep] the [adj] five years	251
7	[prep] the [adj] three years	239
8	during the [adj] [num] years	217
9	[prep] the previous [num] years	217
10	of the [adj] [num] years	164
11	[prep] the [adj] ten years	153
12	[prep] the [adj] 10 years	140
13	[prep] the [adj] 20 years	123
14	[prep] the [adj] four years	118
15	[prep] the following [num] years	87
16	[prep] the [adj] 30 years	83
17	[prep] the [adj] six years	80
18	[prep] the [adj] 12 years	76
19	[prep] the [adj] twenty years	73
20	[prep] the [adj] 15 years	60
21	[prep] the [adj] 40 years	50
22	[prep] the [adj] seven years	43
23	[prep] the [adj] 13 years	42
24	[prep] the [adj] 25 years	42
25	[prep] the [adj] fifteen years	35
26	[prep] the preceding [num] years	34
27	[prep] the [adj] 50 years	34
28	[prep] the [adj] eight years	31
29	[prep] the [adj] hundred years	31
30	[prep] the [adj] thirty years	31