Test-6 - Pairs
0 -   (1 = )
0 -  (1 = )
1 -  (1 = )
6 -  
A B C D E F
A -> C=1
B -> C=2
C -> A=1 B=2 D=7
D -> C=7 E=3 F=4
E -> D=3
F -> D=4


