a 4 z 10 + a 2 z 10 + 2 a 5 z 9 + 4 a 3 z 9 + 2 a z 9 + 2 a 6 z 8 − 2 a 4 z 8 − 3 a 2 z 8 + z 8 + a 7 z 7 − 9 a 5 z 7 − 22 a 3 z 7 − 12 a z 7 − 10 a 6 z 6 − 10 a 4 z 6 − 6 a 2 z 6 − 6 z 6 − 5 a 7 z 5 + 8 a 5 z 5 + 35 a 3 z 5 + 22 a z 5 + 13 a 6 z 4 + 24 a 4 z 4 + 22 a 2 z 4 + 11 z 4 + 6 a 7 z 3 − 20 a 3 z 3 − 14 a z 3 − 7 a 6 z 2 − 18 a 4 z 2 − 18 a 2 z 2 − 7 z 2 − 2 a 7 z − a 5 z + 3 a 3 z + 2 a z + 2 a 6 + 5 a 4 + 4 a 2 + 2 {\displaystyle a^{4}z^{10}+a^{2}z^{10}+2a^{5}z^{9}+4a^{3}z^{9}+2az^{9}+2a^{6}z^{8}-2a^{4}z^{8}-3a^{2}z^{8}+z^{8}+a^{7}z^{7}-9a^{5}z^{7}-22a^{3}z^{7}-12az^{7}-10a^{6}z^{6}-10a^{4}z^{6}-6a^{2}z^{6}-6z^{6}-5a^{7}z^{5}+8a^{5}z^{5}+35a^{3}z^{5}+22az^{5}+13a^{6}z^{4}+24a^{4}z^{4}+22a^{2}z^{4}+11z^{4}+6a^{7}z^{3}-20a^{3}z^{3}-14az^{3}-7a^{6}z^{2}-18a^{4}z^{2}-18a^{2}z^{2}-7z^{2}-2a^{7}z-a^{5}z+3a^{3}z+2az+2a^{6}+5a^{4}+4a^{2}+2}