a 4 z 10 + a 2 z 10 + a 5 z 9 + 4 a 3 z 9 + 3 a z 9 − 4 a 4 z 8 + 4 z 8 − 6 a 5 z 7 − 19 a 3 z 7 − 10 a z 7 + 3 z 7 a − 1 + 4 a 4 z 6 − 11 a 2 z 6 + z 6 a − 2 − 14 z 6 + 15 a 5 z 5 + 34 a 3 z 5 + 9 a z 5 − 10 z 5 a − 1 + 2 a 6 z 4 + 8 a 4 z 4 + 21 a 2 z 4 − 3 z 4 a − 2 + 12 z 4 − 11 a 5 z 3 − 22 a 3 z 3 − 5 a z 3 + 6 z 3 a − 1 − 2 a 6 z 2 − 9 a 4 z 2 − 13 a 2 z 2 + z 2 a − 2 − 5 z 2 + 3 a 5 z + 5 a 3 z + 2 a z + a 6 + 2 a 4 + a 2 + 1 {\displaystyle a^{4}z^{10}+a^{2}z^{10}+a^{5}z^{9}+4a^{3}z^{9}+3az^{9}-4a^{4}z^{8}+4z^{8}-6a^{5}z^{7}-19a^{3}z^{7}-10az^{7}+3z^{7}a^{-1}+4a^{4}z^{6}-11a^{2}z^{6}+z^{6}a^{-2}-14z^{6}+15a^{5}z^{5}+34a^{3}z^{5}+9az^{5}-10z^{5}a^{-1}+2a^{6}z^{4}+8a^{4}z^{4}+21a^{2}z^{4}-3z^{4}a^{-2}+12z^{4}-11a^{5}z^{3}-22a^{3}z^{3}-5az^{3}+6z^{3}a^{-1}-2a^{6}z^{2}-9a^{4}z^{2}-13a^{2}z^{2}+z^{2}a^{-2}-5z^{2}+3a^{5}z+5a^{3}z+2az+a^{6}+2a^{4}+a^{2}+1}
