A:排除号码:
排除前区:04,09,12,14,15,23,26,32=0-1
排除后区:01,07,09,11
B:龙头凤尾:
龙头关注:01或02
凤尾关注:31或33
C:前区方案:
a-10码:01,02,11,13,22,24,27,29,31,33
b-14码:01,02,11,13,16,21,22,24,27,28,29,30,31,33
c-18码:01,02,05,10,11,13,16,17,19,21,22,24,27,28,29,30,31,33
D:后区方案:
后区2码:10,12
后区4码:02,04,10,12
后区6码:02,04,05,06,10,12