a:排除号码:
排除前区:02,11,16,19,22,27,32,35=0-1
排除后区:01,05,09,12
b:龙头凤尾:
龙头关注:07或08
凤尾关注:30或31
c:前区方案:
a-10码:07,08,10,13,15,23,25,28,30,31
b-14码:07,08,10,13,14,15,20,21,23,25,28,29,30,31
c-18码:03,04,05,06,07,08,10,13,14,15,20,21,23,25,28,29,30,31
d:后区方案:
后区2码:02,04,
后区4码:02,04,07,08
后区6码:02,03,04,07,08,11