a:排除号码:
排除前区:02,05,10,14,21,23,28,31=0-1
排除后区:01,05,08,09
b:龙头凤尾:
龙头关注:03或06
凤尾关注:29或32
c:前区方案:
a-10码:03,06,07,09,16,22,24,26,29,32
b-14码:03,06,07,09,16,19,22,24,25,26,29,30,32,33
c-18码:01,03,04,06,07,09,16,17,18,19,22,24,25,26,29,30,32,33
d:后区方案:
后区2码:02,04
后区4码:02,04,10,11
后区6码:02,03,04,07,10,11