K753 :

 a^4*b^2*x^3 + a^2*b^4*x^3 - 2*b^6*x^3 - a^4*c^2*x^3 + 6*b^4*c^2*x^3 - 
     a^2*c^4*x^3 - 6*b^2*c^4*x^3 + 2*c^6*x^3 + a^6*x^2*y + 4*a^4*b^2*x^2*y - 
     2*a^2*b^4*x^2*y - 3*b^6*x^2*y - 5*a^4*c^2*x^2*y + a^2*b^2*c^2*x^2*y + 
     9*b^4*c^2*x^2*y + a^2*c^4*x^2*y - 9*b^2*c^4*x^2*y + 3*c^6*x^2*y + 
     3*a^6*x*y^2 + 2*a^4*b^2*x*y^2 - 4*a^2*b^4*x*y^2 - b^6*x*y^2 - 
     9*a^4*c^2*x*y^2 - a^2*b^2*c^2*x*y^2 + 5*b^4*c^2*x*y^2 + 9*a^2*c^4*x*y^2 - 
     b^2*c^4*x*y^2 - 3*c^6*x*y^2 + 2*a^6*y^3 - a^4*b^2*y^3 - a^2*b^4*y^3 - 
     6*a^4*c^2*y^3 + b^4*c^2*y^3 + 6*a^2*c^4*y^3 + b^2*c^4*y^3 - 2*c^6*y^3 - 
     a^6*x^2*z + 5*a^4*b^2*x^2*z - a^2*b^4*x^2*z - 3*b^6*x^2*z - 
     4*a^4*c^2*x^2*z - a^2*b^2*c^2*x^2*z + 9*b^4*c^2*x^2*z + 2*a^2*c^4*x^2*z - 
     9*b^2*c^4*x^2*z + 3*c^6*x^2*z + 12*a^4*b^2*x*y*z - 12*a^2*b^4*x*y*z - 
     12*a^4*c^2*x*y*z + 12*b^4*c^2*x*y*z + 12*a^2*c^4*x*y*z - 12*b^2*c^4*x*y*z + 
     3*a^6*y^2*z + a^4*b^2*y^2*z - 5*a^2*b^4*y^2*z + b^6*y^2*z - 
     9*a^4*c^2*y^2*z + a^2*b^2*c^2*y^2*z + 4*b^4*c^2*y^2*z + 9*a^2*c^4*y^2*z - 
     2*b^2*c^4*y^2*z - 3*c^6*y^2*z - 3*a^6*x*z^2 + 9*a^4*b^2*x*z^2 - 
     9*a^2*b^4*x*z^2 + 3*b^6*x*z^2 - 2*a^4*c^2*x*z^2 + a^2*b^2*c^2*x*z^2 + 
     b^4*c^2*x*z^2 + 4*a^2*c^4*x*z^2 - 5*b^2*c^4*x*z^2 + c^6*x*z^2 - 
     3*a^6*y*z^2 + 9*a^4*b^2*y*z^2 - 9*a^2*b^4*y*z^2 + 3*b^6*y*z^2 - 
     a^4*c^2*y*z^2 - a^2*b^2*c^2*y*z^2 + 2*b^4*c^2*y*z^2 + 5*a^2*c^4*y*z^2 - 
     4*b^2*c^4*y*z^2 - c^6*y*z^2 - 2*a^6*z^3 + 6*a^4*b^2*z^3 - 6*a^2*b^4*z^3 + 
     2*b^6*z^3 + a^4*c^2*z^3 - b^4*c^2*z^3 + a^2*c^4*z^3 - b^2*c^4*z^3=0