K1086 :

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