A:排除号码:
排除前区:06,08,09,11,16,18,30,33=0-1
排除后区:03,05,07,12
B:龙头凤尾:
龙头关注:03或05
凤尾关注:27或29
C:前区方案:
a-10码:03,05,10,12,17,19,21,23,27,29
b-14码:03,05,10,12,17,19,20,21,23,24,25,27,29,31c-
18码:02,03,04,05,10,12,14,15,17,19,20,21,23,24,25,27,29,31
D:后区方案:
后区2码:09,11
后区4码:04,08,09,11
后区6码:01,02,04,08,09,11