a:排除号码:
排除前区:04,06,07,16,17,21,29,32=0-1
排除后区:01,02,04,05
b:龙头凤尾:
龙头关注:08或10
凤尾关注:30或31
c:前区方案:
a-10码:08,10,11,12,18,20,25,27,30,31
b-14码:08,10,11,12,18,19,20,24,25,26,27,30,31,33
c-18码:01,02,08,10,11,12,13,14,18,19,20,24,25,26,27,30,31,33
d:后区方案:
后区2码:10,12
后区4码:06,07,10,12
后区6码:06,07,08,09,10,12