SN4 ""

No	Pattern	Freq
1	[adj] [noun] [prep] the past years	5
2	[noun] [prep] the past [adj] years	1159
3	[noun] [prep] the past [num] years	1000
4	[noun] [prep] the past [det] years	157
5	[noun] [prep] the past few years	156
6	[noun] [prep] the past few years	156
7	[noun] [prep] the past two years	139
8	[noun] [prep] the past two years	139
9	[noun] [prep] the past five years	87
10	[noun] [prep] the past five years	87
11	[noun] [prep] the past three years	79
12	[noun] [prep] the past three years	79
13	[noun] [prep] the past 20 years	69
14	[noun] [prep] the past 20 years	69
15	[noun] [prep] the past ten years	57
16	[noun] [prep] the past ten years	57
17	[noun] [prep] the past 10 years	54
18	[noun] [prep] the past 10 years	54
19	[noun] [prep] the past 30 years	47
20	[noun] [prep] the past 30 years	47
21	[noun] [prep] the past four years	41
22	[noun] [prep] the past four years	41
23	[noun] [prep] the past 12 years	37
24	[noun] [prep] the past 12 years	37
25	[noun] [prep] the past six years	30
26	[noun] [prep] the past six years	30
27	[noun] [prep] the past 15 years	28
28	[noun] [prep] the past 15 years	28
29	[noun] [prep] the past 40 years	23
30	[noun] [prep] the past 40 years	23