a 5 z 11 + a 3 z 11 + 2 a 6 z 10 + 4 a 4 z 10 + 2 a 2 z 10 + 2 a 7 z 9 − 2 a 5 z 9 − 2 a 3 z 9 + 2 a z 9 + a 8 z 8 − 8 a 6 z 8 − 19 a 4 z 8 − 9 a 2 z 8 + z 8 − 9 a 7 z 7 − 5 a 5 z 7 − 7 a 3 z 7 − 11 a z 7 − 5 a 8 z 6 + 6 a 6 z 6 + 25 a 4 z 6 + 8 a 2 z 6 − 6 z 6 + 10 a 7 z 5 + 6 a 5 z 5 + 14 a 3 z 5 + 18 a z 5 + 8 a 8 z 4 + a 6 z 4 − 13 a 4 z 4 + 5 a 2 z 4 + 11 z 4 + a 9 z 3 + a 5 z 3 − 8 a 3 z 3 − 10 a z 3 − 3 a 8 z 2 + a 4 z 2 − 9 a 2 z 2 − 7 z 2 − a 9 z − 2 a 7 z − a 5 z + a 3 z + a z + a 4 + 2 a 2 + 2 {\displaystyle a^{5}z^{11}+a^{3}z^{11}+2a^{6}z^{10}+4a^{4}z^{10}+2a^{2}z^{10}+2a^{7}z^{9}-2a^{5}z^{9}-2a^{3}z^{9}+2az^{9}+a^{8}z^{8}-8a^{6}z^{8}-19a^{4}z^{8}-9a^{2}z^{8}+z^{8}-9a^{7}z^{7}-5a^{5}z^{7}-7a^{3}z^{7}-11az^{7}-5a^{8}z^{6}+6a^{6}z^{6}+25a^{4}z^{6}+8a^{2}z^{6}-6z^{6}+10a^{7}z^{5}+6a^{5}z^{5}+14a^{3}z^{5}+18az^{5}+8a^{8}z^{4}+a^{6}z^{4}-13a^{4}z^{4}+5a^{2}z^{4}+11z^{4}+a^{9}z^{3}+a^{5}z^{3}-8a^{3}z^{3}-10az^{3}-3a^{8}z^{2}+a^{4}z^{2}-9a^{2}z^{2}-7z^{2}-a^{9}z-2a^{7}z-a^{5}z+a^{3}z+az+a^{4}+2a^{2}+2}