021期 必中20码 开？00准
01,03,04,09,10,11,13,14,15,16
21,23,31,32,34,36,40,41,42,44

020期 必中20码 开狗33准
02,03,08,10,12,13,14,18,19,24
25,28,29,32,33,37,38,40,43,47

017期 必中20码 开虎40准
01,02,05,06,09,11,14,16,17,21
22,30,31,35,36,40,41,47,48,49

015期 必中20码 开鼠42准
02,03,10,11,12,13,14,15,17,19
20,21,22,27,33,34,35,39,41,42

014期 必中20码 开牛05准
02,05,09,14,18,20,21,22,23,24
26,28,29,39,40,41,42,44,45,48

013期 必中20码 开猴46准
01,05,10,11,12,15,19,23,24,27
34,35,39,42,43,44,45,46,47,48