排除前区:01,02,03,09,10,12,13,15=0-1
排除后区:02,03,04,07
B:龙头凤尾:
龙头关注:06或08
凤尾关注:27或29
C:前区方案:
a-10码:06,08,11,16,20,21,24,26,27,29
b-14码:06,08,11,16,17,20,21,24,26,27,28,29,31,35
c-18码:06,08,11,14,16,17,18,19,20,21,24,26,27,28,29,30,31,35
D:后区方案:
后区2码:08,12
后区4码:01,05,08,12
后区6码:01,05,06,08,09,12