a 14 z 4 − 2 a 14 z 2 + 2 a 13 z 5 − 3 a 13 z 3 + 3 a 12 z 6 − 6 a 12 z 4 + 5 a 12 z 2 − a 12 + 3 a 11 z 7 − 7 a 11 z 5 + 9 a 11 z 3 − 2 a 11 z + 2 a 10 z 8 − 4 a 10 z 6 + 5 a 10 z 4 + a 9 z 9 − 2 a 9 z 7 + 5 a 9 z 5 − 6 a 9 z 3 + 5 a 9 z − 2 a 9 z − 1 + 3 a 8 z 8 − 11 a 8 z 6 + 21 a 8 z 4 − 20 a 8 z 2 + 5 a 8 + a 7 z 9 − 5 a 7 z 7 + 17 a 7 z 5 − 30 a 7 z 3 + 20 a 7 z − 5 a 7 z − 1 + a 6 z 8 − 4 a 6 z 6 + 9 a 6 z 4 − 13 a 6 z 2 + 5 a 6 + 3 a 5 z 5 − 12 a 5 z 3 + 13 a 5 z − 3 a 5 z − 1 {\displaystyle a^{14}z^{4}-2a^{14}z^{2}+2a^{13}z^{5}-3a^{13}z^{3}+3a^{12}z^{6}-6a^{12}z^{4}+5a^{12}z^{2}-a^{12}+3a^{11}z^{7}-7a^{11}z^{5}+9a^{11}z^{3}-2a^{11}z+2a^{10}z^{8}-4a^{10}z^{6}+5a^{10}z^{4}+a^{9}z^{9}-2a^{9}z^{7}+5a^{9}z^{5}-6a^{9}z^{3}+5a^{9}z-2a^{9}z^{-1}+3a^{8}z^{8}-11a^{8}z^{6}+21a^{8}z^{4}-20a^{8}z^{2}+5a^{8}+a^{7}z^{9}-5a^{7}z^{7}+17a^{7}z^{5}-30a^{7}z^{3}+20a^{7}z-5a^{7}z^{-1}+a^{6}z^{8}-4a^{6}z^{6}+9a^{6}z^{4}-13a^{6}z^{2}+5a^{6}+3a^{5}z^{5}-12a^{5}z^{3}+13a^{5}z-3a^{5}z^{-1}}
