排除前区:03,07,12,25,27,31,32,35=0-1
排除后区:03,04,09,11
B:龙头凤尾:
龙头关注:01或06
凤尾关注:28或33
C:前区方案:
a-10码:01,06,20,21,22,23,24,26,28,33
b-14码:01,04,06,08,20,21,22,23,24,26,28,30,33,34
c-18码:01,02,04,06,08,09,14,18,20,21,22,23,24,26,28,30,33,34
D:后区方案:
后区2码:06,08
后区4码:01,06,08,10
后区6码:01,06,07,08,10,12