c?6,a?1,a?2,b%5
c?6,a?1,a%3,b%5
c?6,a?1,b?2,b%5
c?6,a?1,b?3,b%5
c?6,c%4,a?1,b%5
c?6,a?1,b%5,d%2
c?6,a?2,a%3,b%5
c?6,a?2,b?3,b%5
c?6,c%4,a?2,b%5