8 x b = 96
6 x b = 72
a x 9 = 99
a x 7 = 91
a x 5 = 80
a x 4 = 96
C:6 = 16
C:5 = 13
c:3 = 24
C:4 = 23
4 x b = 78
3 x b = 81
