a 12 z 6 − 2 a 12 z 4 + a 12 z 2 + 4 a 11 z 7 − 11 a 11 z 5 + 8 a 11 z 3 + 5 a 10 z 8 − 11 a 10 z 6 + 4 a 10 z 4 + a 10 z 2 − a 10 + 2 a 9 z 9 + 7 a 9 z 7 − 28 a 9 z 5 + 19 a 9 z 3 − 4 a 9 z + a 9 z − 1 + 11 a 8 z 8 − 22 a 8 z 6 + 7 a 8 z 4 + 2 a 8 z 2 − 3 a 8 + 2 a 7 z 9 + 10 a 7 z 7 − 31 a 7 z 5 + 27 a 7 z 3 − 12 a 7 z + 3 a 7 z − 1 + 6 a 6 z 8 − 7 a 6 z 6 + a 6 z 4 + 5 a 6 z 2 − 3 a 6 + 7 a 5 z 7 − 14 a 5 z 5 + 22 a 5 z 3 − 15 a 5 z + 4 a 5 z − 1 + 3 a 4 z 6 + 3 a 4 z 2 − 2 a 4 + 6 a 3 z 3 − 7 a 3 z + 2 a 3 z − 1 {\displaystyle a^{12}z^{6}-2a^{12}z^{4}+a^{12}z^{2}+4a^{11}z^{7}-11a^{11}z^{5}+8a^{11}z^{3}+5a^{10}z^{8}-11a^{10}z^{6}+4a^{10}z^{4}+a^{10}z^{2}-a^{10}+2a^{9}z^{9}+7a^{9}z^{7}-28a^{9}z^{5}+19a^{9}z^{3}-4a^{9}z+a^{9}z^{-1}+11a^{8}z^{8}-22a^{8}z^{6}+7a^{8}z^{4}+2a^{8}z^{2}-3a^{8}+2a^{7}z^{9}+10a^{7}z^{7}-31a^{7}z^{5}+27a^{7}z^{3}-12a^{7}z+3a^{7}z^{-1}+6a^{6}z^{8}-7a^{6}z^{6}+a^{6}z^{4}+5a^{6}z^{2}-3a^{6}+7a^{5}z^{7}-14a^{5}z^{5}+22a^{5}z^{3}-15a^{5}z+4a^{5}z^{-1}+3a^{4}z^{6}+3a^{4}z^{2}-2a^{4}+6a^{3}z^{3}-7a^{3}z+2a^{3}z^{-1}}
