− a 4 z 10 + a 6 z 8 − 8 a 4 z 8 + 2 a 2 z 8 + 6 a 6 z 6 − 26 a 4 z 6 + 14 a 2 z 6 − z 6 + 13 a 6 z 4 − 45 a 4 z 4 + 36 a 2 z 4 − 6 z 4 + 13 a 6 z 2 − 42 a 4 z 2 + 42 a 2 z 2 − 11 z 2 + 5 a 6 − 17 a 4 + 19 a 2 − 6 {\displaystyle -a^{4}z^{10}+a^{6}z^{8}-8a^{4}z^{8}+2a^{2}z^{8}+6a^{6}z^{6}-26a^{4}z^{6}+14a^{2}z^{6}-z^{6}+13a^{6}z^{4}-45a^{4}z^{4}+36a^{2}z^{4}-6z^{4}+13a^{6}z^{2}-42a^{4}z^{2}+42a^{2}z^{2}-11z^{2}+5a^{6}-17a^{4}+19a^{2}-6}
