SN4 ""

No	Pattern	Freq
1	[prep] [adj] years of	1375
2	[prep] [num] years of	1153
3	after [adj] years of	556
4	[prep] [det] years of	154
5	of [adj] years of	135
6	[prep] two years of	133
7	[prep] two years of	133
8	within [adj] years of	126
9	in [adj] years of	117
10	to [adj] years of	88
11	[prep] three years of	82
12	[prep] three years of	82
13	[prep] many years of	75
14	[prep] many years of	75
15	[prep] five years of	67
16	[prep] five years of	67
17	at [adj] years of	65
18	[prep] [adj] years of	64
19	for [adj] years of	62
20	[prep] four years of	50
21	[prep] several years of	50
22	[prep] ten years of	50
23	[prep] several years of	50
24	[prep] four years of	50
25	[prep] ten years of	50
26	[prep] 10 years of	43
27	[prep] 10 years of	43
28	by [adj] years of	42
29	[prep] seven years of	39
30	[prep] seven years of	39