a:排除号码:
排除前区:02,07,11,14,17,18,32,34=0-1
排除后区:01,02,06,09
b:龙头凤尾:
龙头关注:04或06
凤尾关注:30或31
c:前区方案:
a-10码:04,06,09,13,15,27,28,29,30,31
b-14码:04,06,09,13,15,20,22,24,25,27,28,29,30,31
c-18码:01,04,05,06,08,09,13,15,19,20,22,24,25,27,28,29,30,31
d:后区方案:
后区2码:08,10
后区4码:03,04,08,10
后区6码:03,04,07,08,10,12