A:排除号码:
排除前区:01,03,07,08,09,12,29,35=0-1
排除后区:08,09,10,11
B:龙头凤尾:
龙头关注:04或14
凤尾关注:27或31
C:前区方案:
a-10码:04,14,15,17,19,20,21,22,27,31
b-14码:02,04,10,13,14,15,16,17,19,20,21,22,27,31
c-18码:02,04,10,13,14,15,16,17,18,19,20,21,22,25,26,27,30,31D:后区方案:
后区2码:02,04
后区4码:02,04,05,12
后区6码:01,02,03,04,05,12