排除前区:01,04,06,13,16,17,23,33=0-1
排除后区:01,05,06,07
B:龙头凤尾:
龙头关注:03或05
凤尾关注:34或35
C:前区方案:
a-10码:03,05,10,14,15,19,24,28,34,35
b-14码:02,03,05,10,14,15,19,20,24,26,27,28,34,35
c-18码:02,03,05,09,10,11,14,15,19,20,21,24,26,27,28,32,34,35
D:后区方案:
后区2码:11,12
后区4码:03,04,11,12
后区6码:03,04,08,09,11,12