y, x, 
(x^2-1/4)*(x^2-1)*(x^2-3/2)*(x^2-6)*(y^2-1)*(y^2-1/4)*(y^2-3/2)*y^16+8*x^2*y^14+28*x^4*y^12+56*x^6*y^10+(70*x^8-2)*y^8+(56*x^10+56*x^2)*y^6+(28*x^12-140*x^4)*y^4+(8*x^14+56*x^6)*y^2+x^16-2*x^8
2*(x^2-1/4)*(x^2-1)*(x^2-3/2)*(x^2-6)*y^17*(y^2-1/4)*(y^2-3/2)+2*(x^2-1/4)*(x^2-1)*(x^2-3/2)*(x^2-6)*(y^2-1)*y^17*(y^2-3/2)+2*(x^2-1/4)*(x^2-1)*(x^2-3/2)*(x^2-6)*(y^2-1)*(y^2-1/4)*y^17+16*(x^2-1/4)*(x^2-1)*(x^2-3/2)*(x^2-6)*(y^2-1)*(y^2-1/4)*(y^2-3/2)*y^15+112*x^2*y^13+336*x^4*y^11+560*x^6*y^9+8*(70*x^8-2)*y^7+6*(56*x^10+56*x^2)*y^5+4*(28*x^12-140*x^4)*y^3+2*(8*x^14+56*x^6)*y
