2 a 6 z 10 + 2 a 4 z 10 + 3 a 7 z 9 + 8 a 5 z 9 + 5 a 3 z 9 + a 8 z 8 − 6 a 6 z 8 − 3 a 4 z 8 + 4 a 2 z 8 − 16 a 7 z 7 − 39 a 5 z 7 − 22 a 3 z 7 + a z 7 − 5 a 8 z 6 − 4 a 6 z 6 − 12 a 4 z 6 − 13 a 2 z 6 + 27 a 7 z 5 + 59 a 5 z 5 + 33 a 3 z 5 + a z 5 + 8 a 8 z 4 + 17 a 6 z 4 + 14 a 4 z 4 + 6 a 2 z 4 + z 4 − 16 a 7 z 3 − 38 a 5 z 3 − 31 a 3 z 3 − 9 a z 3 − 4 a 8 z 2 − 6 a 6 z 2 + 3 a 4 z 2 + 7 a 2 z 2 + 2 z 2 + 3 a 7 z + 11 a 5 z + 13 a 3 z + 7 a z + 2 z a − 1 − a 6 − 5 a 4 − 7 a 2 − 2 {\displaystyle 2a^{6}z^{10}+2a^{4}z^{10}+3a^{7}z^{9}+8a^{5}z^{9}+5a^{3}z^{9}+a^{8}z^{8}-6a^{6}z^{8}-3a^{4}z^{8}+4a^{2}z^{8}-16a^{7}z^{7}-39a^{5}z^{7}-22a^{3}z^{7}+az^{7}-5a^{8}z^{6}-4a^{6}z^{6}-12a^{4}z^{6}-13a^{2}z^{6}+27a^{7}z^{5}+59a^{5}z^{5}+33a^{3}z^{5}+az^{5}+8a^{8}z^{4}+17a^{6}z^{4}+14a^{4}z^{4}+6a^{2}z^{4}+z^{4}-16a^{7}z^{3}-38a^{5}z^{3}-31a^{3}z^{3}-9az^{3}-4a^{8}z^{2}-6a^{6}z^{2}+3a^{4}z^{2}+7a^{2}z^{2}+2z^{2}+3a^{7}z+11a^{5}z+13a^{3}z+7az+2za^{-1}-a^{6}-5a^{4}-7a^{2}-2}
