Data:10 2/HOMFLYPT Polynomial

$z^6 a^8+5 z^4 a^8+6 z^2 a^8+a^8-z^8 a^6-7 z^6 a^6-16 z^4 a^6-14 z^2 a^6-4 a^6+z^6 a^4+6 z^4 a^4+10 z^2 a^4+4 a^4$