a:排除号码:
排除前区:01,05,13,17,20,22,26,32=0-1
排除后区:03,04,07,08
b:龙头凤尾:
龙头关注:04或06
凤尾关注:27或29
c:前区方案:
a-10码:04,06,08,09,11,19,21,25,27,29
b-14码:04,06,08,09,11,18,19,21,23,24,25,27,29,30
c-18码:04,06,07,08,09,10,11,14,15,18,19,21,23,24,25,27,29,30
d:后区方案:
后区2码:10,12
后区4码:01,02,10,12
后区6码:01,02,06,10,11,12