y, x, xy, 
(x^16+8*x^14+28*x^12+56*x^10+70*x^8+56*x^6+28*x^4+8*x^2+1)*y^16+(8*x^16+40*x^14+72*x^12+40*x^10-40*x^8-72*x^6-40*x^4-8*x^2)*y^14+(28*x^16+72*x^14+40*x^12-24*x^10-32*x^8-40*x^6-40*x^4-8*x^2+4)*y^12+(56*x^16+40*x^14-24*x^12+376*x^10+328*x^8-424*x^6-360*x^4+8*x^2)*y^10+(70*x^16-40*x^14-32*x^12+328*x^10+1458*x^8+320*x^6+84*x^4-48*x^2+4)*y^8+(56*x^16-72*x^14-40*x^12-424*x^10+320*x^8-128*x^6+48*x^4-16*x^2)*y^6+(28*x^16-40*x^14-40*x^12-360*x^10+84*x^8+48*x^6+24*x^4)*y^4+(8*x^16-8*x^14-8*x^12+8*x^10-48*x^8-16*x^6)*y^2+(x^16+4*x^12+4*x^8)*(y^7-3*y^6+(2*x^2-x+2)*y^5+(x^3-6*x^2+x+2)*y^4+(x^4-2*x^3+2*x^2+x-3)*y^3+(2*x^5-3*x^4+x^3+10*x^2-x+1)*y^2+(-x^5+3*x^4+4*x^3-12*x^2)*y+x^7-3*x^5-x^4-4*x^3+4*x^2)*(-x^2*y^2+xy+y)
16*(x^16+8*x^14+28*x^12+56*x^10+70*x^8+56*x^6+28*x^4+8*x^2+1)*y^15+14*(8*x^16+40*x^14+72*x^12+40*x^10-40*x^8-72*x^6-40*x^4-8*x^2)*y^13+12*(28*x^16+72*x^14+40*x^12-24*x^10-32*x^8-40*x^6-40*x^4-8*x^2+4)*y^11+10*(56*x^16+40*x^14-24*x^12+376*x^10+328*x^8-424*x^6-360*x^4+8*x^2)*y^9+8*(70*x^16-40*x^14-32*x^12+328*x^10+1458*x^8+320*x^6+84*x^4-48*x^2+4)*y^7+6*(56*x^16-72*x^14-40*x^12-424*x^10+320*x^8-128*x^6+48*x^4-16*x^2)*y^5+4*(28*x^16-40*x^14-40*x^12-360*x^10+84*x^8+48*x^6+24*x^4)*y^3+2*(8*x^16-8*x^14-8*x^12+8*x^10-48*x^8-16*x^6)*y+(x^16+4*x^12+4*x^8)*(7*y^6-18*y^5+5*(2*x^2-x+2)*y^4+4*(x^3-6*x^2+x+2)*y^3+3*(x^4-2*x^3+2*x^2+x-3)*y^2+2*(2*x^5-3*x^4+x^3+10*x^2-x+1)*y-x^5+3*x^4+4*x^3-12*x^2)*(-x^2*y^2+xy+y)+(x^16+4*x^12+4*x^8)*(y^7-3*y^6+(2*x^2-x+2)*y^5+(x^3-6*x^2+x+2)*y^4+(x^4-2*x^3+2*x^2+x-3)*y^3+(2*x^5-3*x^4+x^3+10*x^2-x+1)*y^2+(-x^5+3*x^4+4*x^3-12*x^2)*y+x^7-3*x^5-x^4-4*x^3+4*x^2)*(-2*x^2*y+1)
