Data:9 23/HOMFLYPT Polynomial

$-z^{2}a^{10}+z^{4}a^{8}-2a^{8}+2z^{4}a^{6}+4z^{2}a^{6}+2a^{6}+z^{4}a^{4}+2z^{2}a^{4}+a^{4}$