A:排除号码:
排除前区:07,10,13,14,18,25,30,32=0-1
排除后区:02,04,06,09
B:龙头凤尾:
龙头关注:01或04
凤尾关注:30或33
C:前区方案:
a-10码:01,04,05,16,21,22,24,27,31,33
b-14码:01,02,03,04,05,09,16,19,21,22,24,27,31,33
c-18码:01,02,03,04,05,08,09,11,16,19,21,22,24,27,28,29,31,33
D:后区方案:
后区2码:11,12
后区4码:03,05,11,12
后区6码:03,05,07,08,11,12