A:排除号码:
排除前区:01,04,14,19,21,23,26,29=0-1
排除后区:01,04,07,10
B:龙头凤尾:
龙头关注:02或05
凤尾关注:28或30
C:前区方案:
a-10码:02,05,07,11,13,16,18,25,28,30
b-14码:02,05,07,11,12,13,16,17,18,22,25,28,30,32
c-18码:02,05,06,07,09,10,11,12,13,15,16,17,18,22,25,28,30,32
D:后区方案:
后区2码:06,08
后区4码:06,08,09,11
后区6码:05,06,08,09,11,12