K577 :
-a*c^2*x^2*y + b*c^2*x^2*y + c^3*x^2*y - a*c^2*x*y^2 + b*c^2*x*y^2 -   c^3*x*y^2 + a*b^2*x^2*z - b^3*x^2*z - b^2*c*x^2*z + 2*a^2*b*x*y*z -   2*a*b^2*x*y*z - 2*a^2*c*x*y*z + 2*b^2*c*x*y*z + 2*a*c^2*x*y*z -   2*b*c^2*x*y*z + a^3*y^2*z - a^2*b*y^2*z + a^2*c*y^2*z + a*b^2*x*z^2 +   b^3*x*z^2 - b^2*c*x*z^2 - a^3*y*z^2 - a^2*b*y*z^2 + a^2*c*y*z^2 = 0