A:排除号码:
排除前区:04,07,16,17,19,22,31,33=0-1
排除后区:05,06,10,12
B:龙头凤尾:
龙头关注:06或09
凤尾关注:28或29
C:前区方案:
a-10码:06,09,10,12,14,18,24,26,28,29
b-14码:06,09,10,12,14,18,20,21,24,26,27,28,29,32
c-18码:01,02,03,06,09,10,12,14,15,18,20,21,24,26,27,28,29,32D:后区方案:
后区2码:02,04
后区4码:02,04,09,11
后区6码:01,02,03,04,09,11