Data:9 7/HOMFLYPT Polynomial

[math]\displaystyle{ -z^2 a^{10}-a^{10}+z^4 a^8+2 z^2 a^8+a^8+z^4 a^6+z^2 a^6-a^6+z^4 a^4+3 z^2 a^4+2 a^4 }[/math]