r^6*s^5 - 9*r^6*s^4 + 28*r^6*s^3 - 35*r^6*s^2 + 15*r^6*s - r^6 + r^5*s^8 - 
    12*r^5*s^7 + 59*r^5*s^6 - 148*r^5*s^5 + 205*r^5*s^4 - 186*r^5*s^3 + 
    133*r^5*s^2 - 49*r^5*s + 3*r^5 + r^4*s^8 - 6*r^4*s^7 - 8*r^4*s^6 + 
    118*r^4*s^5 - 260*r^4*s^4 + 249*r^4*s^3 - 164*r^4*s^2 + 58*r^4*s - 3*r^4 + 
    r^3*s^8 - 30*r^3*s^6 + 34*r^3*s^5 + 70*r^3*s^4 - 106*r^3*s^3 + 80*r^3*s^2 - 
    30*r^3*s + r^3 + r^2*s^8 + 6*r^2*s^7 - 7*r^2*s^6 - 25*r^2*s^5 + 5*r^2*s^4 + 
    14*r^2*s^3 - 16*r^2*s^2 + 7*r^2*s - r*s^9 + 3*r*s^8 - 8*r*s^7 + 21*r*s^6 - 
    15*r*s^5 + 10*r*s^4 - 6*r*s^3 + 3*r*s^2 - r*s - s^7