(-2 w^6+6 w^5 z+12 w^6 z+4 w^4 z^2-40 w^5 z^2-35 w^6 z^2-18 w^3 z^3+4 w^4 z^3+100 w^5 z^3+74 w^6 z^3+28 w^2 z^4-8 w^3 z^4+55 w^4 z^4-184 w^5 z^4-115 w^6 z^4-18 w z^5-4 w^2 z^5-36 w^3 z^5-74 w^4 z^5+180 w^5 z^5+148 w^6 z^5+6 z^6+33 w^2 z^6+8 w^3 z^6+103 w^4 z^6-104 w^5 z^6-144 w^6 z^6-18 w z^7+14 w^2 z^7-34 w^3 z^7-56 w^4 z^7+10 w^5 z^7+100 w^6 z^7+19 w^2 z^8-24 w^3 z^8+43 w^4 z^8+16 w^5 z^8-44 w^6 z^8-8 w^3 z^9+10 w^4 z^9-20 w^5 z^9+12 w^6 z^9+w^4 z^10)/(3 (-1+w) z^2 (-2+w+w z) (-w^2+w z+2 w^2 z+z^2-2 w z^2-2 w^2 z^2-w z^3+2 w^2 z^3)^2)