x_1, x_2, 
2*x_2*(4*x_1^10+20*x_1^8*x_2^2+40*x_1^6*x_2^4+40*x_1^4*x_2^6+20*x_1^2*x_2^8+4*x_2^10-20*x_1^9-80*x_1^7*x_2^2-120*x_1^5*x_2^4-80*x_1^3*x_2^6-20*x_1*x_2^8+42*x_1^8+136*x_1^6*x_2^2+156*x_1^4*x_2^4+72*x_1^2*x_2^6+10*x_2^8-48*x_1^7-128*x_1^5*x_2^2-112*x_1^3*x_2^4-32*x_1*x_2^6+32*x_1^6+72*x_1^4*x_2^2+48*x_1^2*x_2^4+8*x_2^6-12*x_1^5-24*x_1^3*x_2^2-12*x_1*x_2^4+4*x_1^3+4*x_1*x_2^2-6*x_1^2-2*x_2^2+4*x_1-1)
8*x_1^11+40*x_1^9*x_2^2+80*x_1^7*x_2^4+80*x_1^5*x_2^6+40*x_1^3*x_2^8+8*x_1*x_2^10-44*x_1^10-180*x_1^8*x_2^2-280*x_1^6*x_2^4-200*x_1^4*x_2^6-60*x_1^2*x_2^8-4*x_2^10+108*x_1^9+368*x_1^7*x_2^2+456*x_1^5*x_2^4+240*x_1^3*x_2^6+44*x_1*x_2^8-156*x_1^8-448*x_1^6*x_2^2-440*x_1^4*x_2^4-160*x_1^2*x_2^6-12*x_2^8+144*x_1^7+352*x_1^5*x_2^2+272*x_1^3*x_2^4+64*x_1*x_2^6-84*x_1^6-180*x_1^4*x_2^2-108*x_1^2*x_2^4-12*x_2^6+24*x_1^5+48*x_1^3*x_2^2+24*x_1*x_2^4+6*x_1^4+4*x_1^2*x_2^2-2*x_2^4-12*x_1^3-4*x_1*x_2^2+8*x_1^2-2*x_1
