a 13 z 3 + 3 a 12 z 4 − a 12 z 2 + 5 a 11 z 5 − 4 a 11 z 3 + a 11 z + 6 a 10 z 6 − 7 a 10 z 4 + a 10 z 2 + 6 a 9 z 7 − 9 a 9 z 5 − a 9 z 3 + a 9 z + 6 a 8 z 8 − 15 a 8 z 6 + 8 a 8 z 4 − 3 a 8 z 2 + 5 a 7 z 9 − 17 a 7 z 7 + 17 a 7 z 5 − 11 a 7 z 3 + 4 a 7 z + 2 a 6 z 10 − 2 a 6 z 8 − 17 a 6 z 6 + 27 a 6 z 4 − 9 a 6 z 2 + 8 a 5 z 9 − 40 a 5 z 7 + 61 a 5 z 5 − 33 a 5 z 3 + 5 a 5 z + a 5 z − 1 + 2 a 4 z 10 − 7 a 4 z 8 − a 4 z 6 + 16 a 4 z 4 − 7 a 4 z 2 − a 4 + 3 a 3 z 9 − 17 a 3 z 7 + 30 a 3 z 5 − 18 a 3 z 3 + a 3 z + a 3 z − 1 + a 2 z 8 − 5 a 2 z 6 + 7 a 2 z 4 − 3 a 2 z 2 {\displaystyle a^{13}z^{3}+3a^{12}z^{4}-a^{12}z^{2}+5a^{11}z^{5}-4a^{11}z^{3}+a^{11}z+6a^{10}z^{6}-7a^{10}z^{4}+a^{10}z^{2}+6a^{9}z^{7}-9a^{9}z^{5}-a^{9}z^{3}+a^{9}z+6a^{8}z^{8}-15a^{8}z^{6}+8a^{8}z^{4}-3a^{8}z^{2}+5a^{7}z^{9}-17a^{7}z^{7}+17a^{7}z^{5}-11a^{7}z^{3}+4a^{7}z+2a^{6}z^{10}-2a^{6}z^{8}-17a^{6}z^{6}+27a^{6}z^{4}-9a^{6}z^{2}+8a^{5}z^{9}-40a^{5}z^{7}+61a^{5}z^{5}-33a^{5}z^{3}+5a^{5}z+a^{5}z^{-1}+2a^{4}z^{10}-7a^{4}z^{8}-a^{4}z^{6}+16a^{4}z^{4}-7a^{4}z^{2}-a^{4}+3a^{3}z^{9}-17a^{3}z^{7}+30a^{3}z^{5}-18a^{3}z^{3}+a^{3}z+a^{3}z^{-1}+a^{2}z^{8}-5a^{2}z^{6}+7a^{2}z^{4}-3a^{2}z^{2}}
