A:排除号码:
排除前区:05,09,16,20,25,28,34,35=0-1
排除后区:02,04,09,11
B:龙头凤尾:
龙头关注:03或04
凤尾关注:27或31
C:前区方案:
a-10码:03,04,06,11,13,18,23,26,27,31
b-14码:01,03,04,06,11,12,13,14,17,18,23,26,27,31c-18码:01,02,03,04,06,07,08,10,11,12,13,14,17,18,23,26,27,31
D:后区方案:
后区2码:01,03
后区4码:01,03,05,08
后区6码:01,03,05,08,10,12