id,a,b,c,d,e,f,g
a,0,8,66,2,2,55,5
b,8,0,2,6,1,6,3
c,66,2,0,9,3,39,12
d,2,6,9,0,89,2,96
e,2,1,3,89,0,8,56
f,55,6,39,2,8,0,7
g,5,3,12,96,56,7,0