Data:10 148/HOMFLYPT Polynomial

[math]\displaystyle{ -z^4 a^6-3 z^2 a^6-3 a^6+z^6 a^4+5 z^4 a^4+9 z^2 a^4+5 a^4-z^4 a^2-2 z^2 a^2-a^2 }[/math]