Data:10 139/HOMFLYPT Polynomial

Failed to parse (syntax error): {\displaystyle z^8 a^{-8} +8 z^6 a^{-8} -z^6 a^{-10} }+21 z^4 a^{-8} -7 z^4 a^{-10} }+21 z^2 a^{-8} -13 z^2 a^{-10} }+z^2 a^{-12} }+6 a^{-8} -6 a^{-10} }+ a^{-12} }}