A:排除号码:
排除前区:02,03,09,12,21,31,32,34=0-1
排除后区:06,07,09,12
B:龙头凤尾:
龙头关注:06或07
凤尾关注:26或29
C:前区方案:
a-10码:06,07,08,10,11,15,17,22,26,29
b-14码:01,04,05,06,07,08,10,11,15,17,19,22,26,29
c-18码:01,04,05,06,07,08,10,11,15,17,19,20,22,24,26,27,28,29D:后区方案:
后区2码:08,10
后区4码:02,04,08,10
后区6码:02,03,04,08,10,11