Data:10 60/HOMFLYPT Polynomial

$a^6-3 z^2 a^4-3 a^4+3 z^4 a^2+6 z^2 a^2+4 a^2-z^6-3 z^4-5 z^2-2+z^4 a^{-2} +z^2 a^{-2} + a^{-2}$