A:排除号码:
排除前区:01,07,11,15,23,26,29,32=0-1
排除后区:01,02,09,11
B:龙头凤尾:
龙头关注:02或04
凤尾关注:27或28
C:前区方案:
a-10码:02,04,09,13,17,19,22,25,27,28
b-14码:02,04,06,09,13,16,17,19,22,25,27,28,30,31
c-18码:02,04,06,09,10,12,13,16,17,18,19,20,22,25,27,28,30,31
D:后区方案:
后区2码:06,08
后区4码:06,08,10,12
后区6码:03,06,07,08,10,12