y*z^2*(-1+12*y-2*z+48*y*z)*Dz^2*Dy+3*y^2*z*(-1+12*y+16*y*z)*Dz*Dy^2+2*y^3*(-1+16*y)*Dy^3+12*y*z^2*(1+4*z)*Dz^2+4*y*z*(-1+24*y-z+60*y*z)*Dz*Dy+2*y^2*(-3+80*y+24*y*z)*Dy^2+24*y*z*(1+6*z)*Dz+2*y*(-1+68*y+72*y*z)*Dy+8*y*(1+6*z)