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