a:排除号码:
排除前区:01,08,09,11,15,20,21,34=0-1
排除后区:02,04,07,09
b:龙头凤尾:
龙头关注:04或06
凤尾关注:26或28
c:前区方案:
a-10码:04,06,07,13,18,22,23,25,26,28
b-14码:04,06,07,13,18,19,22,23,25,26,27,28,29,30
c-18码:03,04,05,06,07,13,17,18,19,22,23,24,25,26,27,28,29,30
d:后区方案:
后区2码:06,08
后区4码:01,03,06,08
后区6码:01,03,06,08,10,11