SN4 ""

No	Pattern	Freq
1	[adj] years have [verb]	531
2	[num] years have [verb]	287
3	[adj] years have [verb]	147
4	recent years have [verb]	115
5	recent years have [verb]	115
6	[det] years have [verb]	90
7	few years have [verb]	56
8	few years have [verb]	56
9	the years have [verb]	52
10	the years have [verb]	52
11	[art] years have [verb]	52
12	[art] years have [verb]	52
13	two years have [verb]	34
14	two years have [verb]	34
15	ten years have [verb]	31
16	ten years have [verb]	31
17	[prep] years have [verb]	24
18	[prep] years have [verb]	24
19	three years have [verb]	23
20	three years have [verb]	23
21	many years have [verb]	21
22	many years have [verb]	21
23	five years have [verb]	19
24	five years have [verb]	19
25	[noun] years have [verb]	18
26	of years have [verb]	14
27	twenty years have [verb]	14
28	of years have [verb]	14
29	twenty years have [verb]	14
30	four years have [verb]	13