a 4 z 10 + a 2 z 10 + 3 a 5 z 9 + 5 a 3 z 9 + 2 a z 9 + 3 a 6 z 8 + 2 a 4 z 8 + z 8 + a 7 z 7 − 11 a 5 z 7 − 21 a 3 z 7 − 9 a z 7 − 13 a 6 z 6 − 23 a 4 z 6 − 15 a 2 z 6 − 5 z 6 − 4 a 7 z 5 + 7 a 5 z 5 + 24 a 3 z 5 + 13 a z 5 + 15 a 6 z 4 + 33 a 4 z 4 + 28 a 2 z 4 + 10 z 4 + 4 a 7 z 3 + a 5 z 3 − 10 a 3 z 3 − 6 a z 3 + z 3 a − 1 − 6 a 6 z 2 − 17 a 4 z 2 − 17 a 2 z 2 − 6 z 2 − a 7 z − a 5 z + a 3 z + a z + a 6 + 3 a 4 + 3 a 2 + 2 {\displaystyle a^{4}z^{10}+a^{2}z^{10}+3a^{5}z^{9}+5a^{3}z^{9}+2az^{9}+3a^{6}z^{8}+2a^{4}z^{8}+z^{8}+a^{7}z^{7}-11a^{5}z^{7}-21a^{3}z^{7}-9az^{7}-13a^{6}z^{6}-23a^{4}z^{6}-15a^{2}z^{6}-5z^{6}-4a^{7}z^{5}+7a^{5}z^{5}+24a^{3}z^{5}+13az^{5}+15a^{6}z^{4}+33a^{4}z^{4}+28a^{2}z^{4}+10z^{4}+4a^{7}z^{3}+a^{5}z^{3}-10a^{3}z^{3}-6az^{3}+z^{3}a^{-1}-6a^{6}z^{2}-17a^{4}z^{2}-17a^{2}z^{2}-6z^{2}-a^{7}z-a^{5}z+a^{3}z+az+a^{6}+3a^{4}+3a^{2}+2}
