K1013 :b^4 c^2 x^2 y+b^2 c^4 x^2 y+c^6 x^2 y-a^4 c^2 x y^2-a^2 c^4 x y^2-c^6 x y^2-b^6 x^2 z-b^4 c^2 x^2 z-b^2 c^4 x^2 z+a^6 y^2 z+a^4 c^2 y^2 z+a^2 c^4 y^2 z+a^4 b^2 x z^2+a^2 b^4 x z^2+b^6 x z^2-a^6 y z^2-a^4 b^2 y z^2-a^2 b^4 y z^2 = 0