A:排除号码:
排除前区:01,03,05,18,21,23,25,31=0-1
排除后区:04,07,08,09
B:龙头凤尾:
龙头关注:09或11
凤尾关注:29或33
C:前区方案:
a-10码:09,11,12,15,16,19,27,28,29,33
b-14码:02,07,09,11,12,13,15,16,19,20,27,28,29,33
c-18码:02,07,09,11,12,13,15,16,19,20,22,26,27,28,29,30,32,33
D:后区方案:
后区2码:11,12
后区4码:01,03,11,12
后区6码:01,02,03,06,11,12