a 3 z 9 + a z 9 + 2 a 4 z 8 + 3 a 2 z 8 + z 8 + 2 a 5 z 7 − 3 a 3 z 7 − 5 a z 7 + a 6 z 6 − 8 a 4 z 6 − 15 a 2 z 6 − 6 z 6 − 8 a 5 z 5 + 8 a z 5 − 4 a 6 z 4 + 8 a 4 z 4 + 25 a 2 z 4 + 13 z 4 + 7 a 5 z 3 + 3 a 3 z 3 − 3 a z 3 + z 3 a − 1 + 3 a 6 z 2 − 5 a 4 z 2 − 17 a 2 z 2 − 9 z 2 − 2 a 5 z − 2 a 3 z + 2 a 4 + 4 a 2 + 3 {\displaystyle a^{3}z^{9}+az^{9}+2a^{4}z^{8}+3a^{2}z^{8}+z^{8}+2a^{5}z^{7}-3a^{3}z^{7}-5az^{7}+a^{6}z^{6}-8a^{4}z^{6}-15a^{2}z^{6}-6z^{6}-8a^{5}z^{5}+8az^{5}-4a^{6}z^{4}+8a^{4}z^{4}+25a^{2}z^{4}+13z^{4}+7a^{5}z^{3}+3a^{3}z^{3}-3az^{3}+z^{3}a^{-1}+3a^{6}z^{2}-5a^{4}z^{2}-17a^{2}z^{2}-9z^{2}-2a^{5}z-2a^{3}z+2a^{4}+4a^{2}+3}
