A:排除号码:
排除前区:02,07,11,20,29,33,34,35=0-1
排除后区:01,03,08,12
B:龙头凤尾:
龙头关注:03或05
凤尾关注:27或28
C:前区方案:
a-10码:03,05,09,10,12,15,17,25,27,28
b-14码:03,05,09,10,12,15,17,21,24,25,26,27,28,31
c-18码:03,05,08,09,10,12,13,15,17,18,19,21,24,25,26,27,28,31
D:后区方案:
后区2码:06,09
后区4码:02,05,06,09
后区6码:02,05,06,09,10,11