K775 :a^2*b^3*c^4*x^2*y - b^4*c^5*x^2*y - a^3*b^2*c^4*x*y^2 + a^4*c^5*x*y^2 - a^2*b^4*c^3*x^2*z + b^5*c^4*x^2*z + a^4*b^2*c^3*y^2*z - a^5*c^4*y^2*z - a^4*b^5*x*z^2 +  a^3*b^4*c^2*x*z^2 + a^5*b^4*y*z^2 - a^4*b^3*c^2*y*z^2 = 0