SN4 ""

No	Pattern	Freq
1	[prep] twenty year [noun]	14
2	[prep] twenty year [noun]	14
3	[art] twenty year [noun]	10
4	[art] twenty year [noun]	10
5	the twenty year [noun]	7
6	the twenty year [noun]	7
7	[adv] twenty year [noun]	6
8	[adv] twenty year [noun]	6
9	twenty [num] year [noun]	21
10	twenty [adj] year [noun]	21
11	twenty five year [noun]	13
12	twenty five year [noun]	13
13	twenty year [prep] [noun]	83
14	twenty year [prep] [noun]	83
15	twenty year of [noun]	42
16	twenty year of [noun]	42
17	twenty year [unc] [noun]	40
18	twenty year ['s] [noun]	40
19	twenty year ' [noun]	38
20	twenty year ' [noun]	38
21	twenty year [adj] [noun]	21
22	twenty year [adj] [noun]	18
23	twenty year [adv] [noun]	14
24	twenty year [art] [noun]	14
25	twenty year old [noun]	14
26	twenty year [adv] [noun]	14
27	twenty year [art] [noun]	14
28	twenty year old [noun]	14
29	twenty year in [noun]	13
30	twenty year in [noun]	13