− a 4 z 10 − a 2 z 10 + a 6 z 8 − 6 a 4 z 8 − 5 a 2 z 8 + z 8 + 5 a 6 z 6 − 12 a 4 z 6 − 5 a 2 z 6 + 4 z 6 + 6 a 6 z 4 − 11 a 4 z 4 + 6 a 2 z 4 + 2 z 4 + a 6 z 2 − 6 a 4 z 2 + 11 a 2 z 2 − 4 z 2 − 2 a 4 + 4 a 2 − 1 {\displaystyle -a^{4}z^{10}-a^{2}z^{10}+a^{6}z^{8}-6a^{4}z^{8}-5a^{2}z^{8}+z^{8}+5a^{6}z^{6}-12a^{4}z^{6}-5a^{2}z^{6}+4z^{6}+6a^{6}z^{4}-11a^{4}z^{4}+6a^{2}z^{4}+2z^{4}+a^{6}z^{2}-6a^{4}z^{2}+11a^{2}z^{2}-4z^{2}-2a^{4}+4a^{2}-1}
