a 6 z 10 + a 4 z 10 + 2 a 7 z 9 + 3 a 5 z 9 + a 3 z 9 + a 8 z 8 − 5 a 6 z 8 − 6 a 4 z 8 − 13 a 7 z 7 − 22 a 5 z 7 − 7 a 3 z 7 + 2 a z 7 − 6 a 8 z 6 + 6 a 4 z 6 + 3 a 2 z 6 + 3 z 6 + 24 a 7 z 5 + 45 a 5 z 5 + 15 a 3 z 5 − 5 a z 5 + z 5 a − 1 + 10 a 8 z 4 + 17 a 6 z 4 + 7 a 4 z 4 − 9 a 2 z 4 − 9 z 4 − 16 a 7 z 3 − 30 a 5 z 3 − 12 a 3 z 3 − 2 z 3 a − 1 − 6 a 8 z 2 − 13 a 6 z 2 − 7 a 4 z 2 + 4 a 2 z 2 + 4 z 2 + 4 a 7 z + 7 a 5 z + 3 a 3 z + a 8 + 2 a 6 + a 4 + 1 {\displaystyle a^{6}z^{10}+a^{4}z^{10}+2a^{7}z^{9}+3a^{5}z^{9}+a^{3}z^{9}+a^{8}z^{8}-5a^{6}z^{8}-6a^{4}z^{8}-13a^{7}z^{7}-22a^{5}z^{7}-7a^{3}z^{7}+2az^{7}-6a^{8}z^{6}+6a^{4}z^{6}+3a^{2}z^{6}+3z^{6}+24a^{7}z^{5}+45a^{5}z^{5}+15a^{3}z^{5}-5az^{5}+z^{5}a^{-1}+10a^{8}z^{4}+17a^{6}z^{4}+7a^{4}z^{4}-9a^{2}z^{4}-9z^{4}-16a^{7}z^{3}-30a^{5}z^{3}-12a^{3}z^{3}-2z^{3}a^{-1}-6a^{8}z^{2}-13a^{6}z^{2}-7a^{4}z^{2}+4a^{2}z^{2}+4z^{2}+4a^{7}z+7a^{5}z+3a^{3}z+a^{8}+2a^{6}+a^{4}+1}
