a:排除号码:
排除前区:04,12,15,20,21,27,30,33=0-1
排除后区:01,02,07,11
b:龙头凤尾:
龙头关注:03或06
凤尾关注:26或28
c:前区方案:
a-10码:03,06,11,14,16,18,23,25,26,28
b-14码:03,06,08,11,14,16,18,19,22,23,24,25,26,28
c-18码:02,03,06,07,08,09,11,13,14,16,18,19,22,23,24,25,26,28
d:后区方案:
后区2码:03,05
后区4码:03,05,06,08
后区6码:03,05,06,08,10,12