Data:10 6/HOMFLYPT Polynomial

$z^4 a^8+3 z^2 a^8+a^8-z^6 a^6-4 z^4 a^6-4 z^2 a^6-a^6-z^6 a^4-4 z^4 a^4-4 z^2 a^4-2 a^4+z^4 a^2+4 z^2 a^2+3 a^2$