SN4 ""

No	Pattern	Freq
1	after [num] years	1681
2	after two years	213
3	after five years	148
4	after three years	146
5	after ten years	81
6	after four years	80
7	after six years	55
8	after 10 years	53
9	after 20 years	52
10	after seven years	46
11	after 13 years	39
12	after eight years	37
13	after twenty years	37
14	after 30 years	35
15	after 25 years	34
16	after 40 years	29
17	after thirty years	26
18	after 15 years	26
19	after 12 years	25
20	after nine years	19
21	after 14 years	17
22	after 50 years	17
23	after 17 years	15
24	after 22 years	15
25	after 11 years	14
26	after fifteen years	13
27	after twelve years	13
28	after forty years	13
29	after 18 years	12
30	after 23 years	12