排除前区:04,07,08,09,10,11,27,33=0-1
排除后区:05,06,10,11
B:龙头凤尾:
龙头关注:02或06
凤尾关注:26或35
C:前区方案:
a-10码:02,06,14,15,18,20,23,24,26,35
b-14码:01,02,05,06,13,14,15,18,20,22,23,24,26,35
c-18码:01,02,05,06,13,14,15,18,20,22,23,24,26,28,29,30,34,35
D:后区方案:
后区2码:02,04
后区4码:02,04,07,08
后区6码:02,04,07,08,09,12