Data:K11a88/HOMFLYPT Polynomial

$z 8 -2 a 2 z 6 - z 6 a -2 + 6 z 6 + a 4 z 4 -9 a 2 z 4 -4 z 4 a -2 + 14 z 4 + 3 a 4 z 2 -13 a 2 z 2 -5 z 2 a -2 + 14 z 2 + 2 a 4 -5 a 2 - a -2 + 5$