SN4 ""

No	Pattern	Freq
1	[adj] twenty years [art] [noun]	8
2	twenty years [prep] [art] [noun]	50
3	twenty years [prep] [art] [noun]	50
4	twenty years [adv] [art] [noun]	20
5	twenty years [adv] [art] [noun]	19
6	twenty years after [art] [noun]	14
7	twenty years after [art] [noun]	14
8	twenty years ago [art] [noun]	12
9	twenty years ago [art] [noun]	12
10	twenty years in [art] [noun]	11
11	twenty years in [art] [noun]	11
12	twenty years [verb] [art] [noun]	10
13	twenty years later [art] [noun]	5
14	twenty years later [art] [noun]	5
15	twenty years of [art] [noun]	5
16	twenty years [conj] [art] [noun]	5
17	twenty years of [art] [noun]	5
18	twenty years [art] [adj] [noun]	6
19	twenty years [art] [noun] [prep]	7
20	twenty years [art] [noun] [prep]	7
21	twenty years [art] [noun] of	6
22	twenty years [art] [noun] of	6