a 12 z 6 − 3 a 12 z 4 + 3 a 12 z 2 − a 12 + 3 a 11 z 7 − 8 a 11 z 5 + 7 a 11 z 3 − 3 a 11 z + a 11 z − 1 + 4 a 10 z 8 − 5 a 10 z 6 − 6 a 10 z 4 + 9 a 10 z 2 − 3 a 10 + 4 a 9 z 9 − 2 a 9 z 7 − 11 a 9 z 5 + 15 a 9 z 3 − 12 a 9 z + 3 a 9 z − 1 + 2 a 8 z 10 + 6 a 8 z 8 − 17 a 8 z 6 + 8 a 8 z 4 + 3 a 8 z 2 − 3 a 8 + 11 a 7 z 9 − 20 a 7 z 7 + 9 a 7 z 5 + 6 a 7 z 3 − 7 a 7 z + 2 a 7 z − 1 + 2 a 6 z 10 + 12 a 6 z 8 − 34 a 6 z 6 + 31 a 6 z 4 − 8 a 6 z 2 + 7 a 5 z 9 − 7 a 5 z 7 − 2 a 5 z 5 + 5 a 5 z 3 + 10 a 4 z 8 − 19 a 4 z 6 + 15 a 4 z 4 − 5 a 4 z 2 + 8 a 3 z 7 − 13 a 3 z 5 + 6 a 3 z 3 − 2 a 3 z + 4 a 2 z 6 − 5 a 2 z 4 + a z 5 − a z 3 {\displaystyle a^{12}z^{6}-3a^{12}z^{4}+3a^{12}z^{2}-a^{12}+3a^{11}z^{7}-8a^{11}z^{5}+7a^{11}z^{3}-3a^{11}z+a^{11}z^{-1}+4a^{10}z^{8}-5a^{10}z^{6}-6a^{10}z^{4}+9a^{10}z^{2}-3a^{10}+4a^{9}z^{9}-2a^{9}z^{7}-11a^{9}z^{5}+15a^{9}z^{3}-12a^{9}z+3a^{9}z^{-1}+2a^{8}z^{10}+6a^{8}z^{8}-17a^{8}z^{6}+8a^{8}z^{4}+3a^{8}z^{2}-3a^{8}+11a^{7}z^{9}-20a^{7}z^{7}+9a^{7}z^{5}+6a^{7}z^{3}-7a^{7}z+2a^{7}z^{-1}+2a^{6}z^{10}+12a^{6}z^{8}-34a^{6}z^{6}+31a^{6}z^{4}-8a^{6}z^{2}+7a^{5}z^{9}-7a^{5}z^{7}-2a^{5}z^{5}+5a^{5}z^{3}+10a^{4}z^{8}-19a^{4}z^{6}+15a^{4}z^{4}-5a^{4}z^{2}+8a^{3}z^{7}-13a^{3}z^{5}+6a^{3}z^{3}-2a^{3}z+4a^{2}z^{6}-5a^{2}z^{4}+az^{5}-az^{3}}
