Data:L11a211/HOMFLYPT Polynomial

$z 5 a 7 + 3 z 3 a 7 + 3 z a 7 + a 7 z -1 - z 7 a 5 -4 z 5 a 5 -7 z 3 a 5 -6 z a 5 - a 5 z -1 - z 7 a 3 -3 z 5 a 3 -2 z 3 a 3 + z 5 a + 2 z 3 a$