Data:L9a43/HOMFLYPT Polynomial

$-a^{12}z^{-2}+4a^{10}z^{-2}+4a^{10}-6z^{2}a^{8}-5a^{8}z^{-2}-11a^{8}+3z^{4}a^{6}+8z^{2}a^{6}+2a^{6}z^{-2}+7a^{6}+z^{4}a^{4}+z^{2}a^{4}$