K862 :

a^3 b^2 c x^2 y-a c^5 x^2 y-a^2 b^3 c x y^2+b c^5 x y^2+a b^5 x^2 z-a^3 b c^2 x^2 z-a^5 b y^2 z+a b^3 c^2 y^2 z-b^5 c x z^2+a^2 b c^3 x z^2+a^5 c y z^2-a b^2 c^3 y z^2=0