SN4 ""

No	Pattern	Freq
1	last [adj] years	3207
2	last [num] years	2635
3	last [det] years	565
4	last few years	561
5	last few years	561
6	last two years	342
7	last two years	342
8	last ten years	295
9	last ten years	295
10	last three years	240
11	last five years	240
12	last three years	240
13	last five years	240
14	last twenty years	158
15	last twenty years	158
16	last 20 years	120
17	last 20 years	120
18	last four years	114
19	last four years	114
20	last 10 years	96
21	last 10 years	96
22	last 30 years	76
23	last 30 years	76
24	last thirty years	71
25	last thirty years	71
26	last six years	53
27	last six years	53
28	last fifteen years	50
29	last fifteen years	50
30	last hundred years	49