2 a 6 z 10 + 2 a 4 z 10 + 3 a 7 z 9 + 9 a 5 z 9 + 6 a 3 z 9 + a 8 z 8 − 5 a 6 z 8 + 2 a 4 z 8 + 8 a 2 z 8 − 16 a 7 z 7 − 42 a 5 z 7 − 18 a 3 z 7 + 8 a z 7 − 5 a 8 z 6 − 10 a 6 z 6 − 33 a 4 z 6 − 21 a 2 z 6 + 7 z 6 + 27 a 7 z 5 + 59 a 5 z 5 + 12 a 3 z 5 − 15 a z 5 + 5 z 5 a − 1 + 8 a 8 z 4 + 31 a 6 z 4 + 47 a 4 z 4 + 12 a 2 z 4 + 3 z 4 a − 2 − 9 z 4 − 16 a 7 z 3 − 29 a 5 z 3 − 5 a 3 z 3 + 4 a z 3 − 3 z 3 a − 1 + z 3 a − 3 − 5 a 8 z 2 − 19 a 6 z 2 − 19 a 4 z 2 − 2 a 2 z 2 − z 2 a − 2 + 2 z 2 + 2 a 7 z + 5 a 5 z + 3 a 3 z + a 8 + 3 a 6 + 2 a 4 − a 2 {\displaystyle 2a^{6}z^{10}+2a^{4}z^{10}+3a^{7}z^{9}+9a^{5}z^{9}+6a^{3}z^{9}+a^{8}z^{8}-5a^{6}z^{8}+2a^{4}z^{8}+8a^{2}z^{8}-16a^{7}z^{7}-42a^{5}z^{7}-18a^{3}z^{7}+8az^{7}-5a^{8}z^{6}-10a^{6}z^{6}-33a^{4}z^{6}-21a^{2}z^{6}+7z^{6}+27a^{7}z^{5}+59a^{5}z^{5}+12a^{3}z^{5}-15az^{5}+5z^{5}a^{-1}+8a^{8}z^{4}+31a^{6}z^{4}+47a^{4}z^{4}+12a^{2}z^{4}+3z^{4}a^{-2}-9z^{4}-16a^{7}z^{3}-29a^{5}z^{3}-5a^{3}z^{3}+4az^{3}-3z^{3}a^{-1}+z^{3}a^{-3}-5a^{8}z^{2}-19a^{6}z^{2}-19a^{4}z^{2}-2a^{2}z^{2}-z^{2}a^{-2}+2z^{2}+2a^{7}z+5a^{5}z+3a^{3}z+a^{8}+3a^{6}+2a^{4}-a^{2}}
