,A1,A2,B1,B2,C1,C2
A1,0,0,10,0,0,0
A2,2,0,8,0,0,0
B1,0,0,10,0,0,0
B2,0,0,8,2,0,0
C1,0,0,3,4,3,0
C2,0,0,0,3,7,0