A:排除号码:
排除前区:02,07,09,17,21,25,31,33=0-1
排除后区:01,02,05,08
B:龙头凤尾:
龙头关注:04或06
凤尾关注:26或28
C:前区方案:
a-10码:04,06,08,11,18,20,23,24,26,28
b-14码:04,06,08,10,11,13,18,20,23,24,26,28,29,30
c-18码:01,04,06,08,10,11,12,13,15,18,20,22,23,24,26,28,29,30
D:后区方案:
后区2码:10,12
后区4码:03,06,10,12
后区6码:03,06,09,10,11,12