K561 :
a^3*c^3*x^2*y - a^2*b*c^3*x^2*y + a*b^2*c^3*x^2*y - b^3*c^3*x^2*y -   a^2*c^4*x^2*y - b^2*c^4*x^2*y - a*c^5*x^2*y + b*c^5*x^2*y + c^6*x^2*y +   a^3*c^3*x*y^2 - a^2*b*c^3*x*y^2 + a*b^2*c^3*x*y^2 -   b^3*c^3*x*y^2 + a^2*c^4*x*y^2 + b^2*c^4*x*y^2 - a*c^5*x*y^2 +   b*c^5*x*y^2 - c^6*x*y^2 - a^3*b^3*x^2*z + a^2*b^4*x^2*z + a*b^5*x^2*z -   b^6*x^2*z + a^2*b^3*c*x^2*z - b^5*c*x^2*z -   a*b^3*c^2*x^2*z + b^4*c^2*x^2*z + b^3*c^3*x^2*z - a^5*b*x*y*z +   2*a^4*b^2*x*y*z - 2*a^2*b^4*x*y*z + a*b^5*x*y*z + a^5*c*x*y*z -   a^3*b^2*c*x*y*z + a^2*b^3*c*x*y*z - b^5*c*x*y*z -   2*a^4*c^2*x*y*z + a^3*b*c^2*x*y*z - a*b^3*c^2*x*y*z + 2*b^4*c^2*x*y*z -   a^2*b*c^3*x*y*z + a*b^2*c^3*x*y*z + 2*a^2*c^4*x*y*z - 2*b^2*c^4*x*y*z -   a*c^5*x*y*z + b*c^5*x*y*z + a^6*y^2*z -   a^5*b*y^2*z - a^4*b^2*y^2*z + a^3*b^3*y^2*z + a^5*c*y^2*z -   a^3*b^2*c*y^2*z - a^4*c^2*y^2*z + a^3*b*c^2*y^2*z - a^3*c^3*y^2*z -   a^3*b^3*x*z^2 - a^2*b^4*x*z^2 + a*b^5*x*z^2 + b^6*x*z^2 +   a^2*b^3*c*x*z^2 - b^5*c*x*z^2 - a*b^3*c^2*x*z^2 - b^4*c^2*x*z^2 +   b^3*c^3*x*z^2 - a^6*y*z^2 - a^5*b*y*z^2 + a^4*b^2*y*z^2 + a^3*b^3*y*z^2 +   a^5*c*y*z^2 - a^3*b^2*c*y*z^2 + a^4*c^2*y*z^2 +   a^3*b*c^2*y*z^2 - a^3*c^3*y*z^2 = 0