A:排除号码:
排除前区:02,07,10,12,17,29,32,35=0-1
排除后区:03,04,05,07
B:龙头凤尾:
龙头关注:01或03
凤尾关注:28或30
C:前区方案:
a-10码:01,03,11,13,15,23,25,27,28,30
b-14码:01,03,11,13,15,21,22,23,24,25,26,27,28,30
c-18码:01,03,04,06,09,11,13,15,20,21,22,23,24,25,26,27,28,30D:后区方案:
后区2码:10,11
后区4码:01,02,10,11
后区6码:01,02,09,10,11,12