(commify)
(algforminput)
vars a,b,c;
a*a+7*a*b+3*a*c-b*a-2*b*b-3*b*c+c*a+2*c*b+4*c*c,
a*a+4*a*b+2*a*c+b*a-3*b*b-4*b*c-c*a+3*c*b+2*c*c,
a*a+5*a*b+a*c+2*b*a+3*b*b-8*b*c-c*a+6*c*b+2*c*c;
