a:排除号码:
排除前区:02,03,05,14,17,21,25,33=0-1
排除后区:03,07,09,11
b:龙头凤尾:
龙头关注:06或07
凤尾关注:29或30
c:前区方案:
a-10码:06,07,09,12,15,19,26,28,29,30
b-14码:06,07,09,12,15,19,22,23,26,27,28,29,30,31
c-18码:01,06,07,09,10,11,12,15,19,20,22,23,26,27,28,29,30,31
d:后区方案:
后区2码:02,04
后区4码:02,04,06,10
后区6码:01,02,04,05,06,10