A:排除号码:
排除前区:03,05,08,10,12,15,25,32=0-1
排除后区:01,02,04,09
B:龙头凤尾:
龙头关注:07或13
凤尾关注:26或31
C:前区方案:
a-10码:07,13,16,17,18,20,22,24,26,31
b-14码:07,13,16,17,18,20,22,23,24,26,28,29,31,33
c-18码:01,04,07,13,16,17,18,19,20,21,22,23,24,26,28,29,31,33
D:后区方案:
后区2码:03,05
后区4码:03,05,06,07
后区6码:03,05,06,07,08,10