w, z, y, x, c, b, a, C1, B1, A1, 
-a^2*b^2*c^2+a^2*b^2*z^2+a^2*c^2*y^2+b^2*c^2*x^2
-A1*a^2+a^2*x+w*x
-B1*b^2+b^2*y+w*y
-C1*c^2+c^2*z+w*z
