A:排除号码:
排除前区:01,03,05,06,09,10,20,35=0-1
排除后区:01,03,05,08
B:龙头凤尾:
龙头关注:08或12
凤尾关注:27或31
C:前区方案:
a-10码:08,12,14,16,17,19,22,26,27,31
b-14码:02,08,12,14,15,16,17,19,22,23,26,27,29,31
c-18码:02,08,11,12,14,15,16,17,19,21,22,23,24,26,27,28,29,31
D:后区方案:
后区2码:11,12
后区4码:07,10,11,12
后区6码:02,04,07,10,11,12