Data:L11n175/HOMFLYPT Polynomial

$a^9 \left(-z^3\right)+a^9 z^{-1} +a^7 z^5+a^7 z^3-a^7 z-2 a^7 z^{-1} +a^5 z^5+a^5 z^3+a^5 z+2 a^5 z^{-1} -2 a^3 z^3-3 a^3 z-a^3 z^{-1}$