a 11 z 5 − 5 a 11 z 3 + 5 a 11 z − a 9 z + a 9 z − 1 − a 8 − a 7 z + a 7 z − 1 + a 5 z 5 − 5 a 5 z 3 + 5 a 5 z {\displaystyle a^{11}z^{5}-5a^{11}z^{3}+5a^{11}z-a^{9}z+a^{9}z^{-1}-a^{8}-a^{7}z+a^{7}z^{-1}+a^{5}z^{5}-5a^{5}z^{3}+5a^{5}z}
