SN4 ""

No	Pattern	Freq
1	past [adj] years [pron]	146
2	past [num] years [pron]	112
3	past few years [pron]	34
4	past [det] years [pron]	34
5	past few years [pron]	34
6	past two years [pron]	28
7	past two years [pron]	28
8	past three years [pron]	15
9	past three years [pron]	15
10	past ten years [pron]	8
11	past ten years [pron]	8
12	past five years [pron]	7
13	past five years [pron]	7
14	past 10 years [pron]	6
15	past twenty years [pron]	6
16	past twenty years [pron]	6
17	past 10 years [pron]	6