a 6 z 10 − a 8 z 8 + 8 a 6 z 8 − a 4 z 8 − 6 a 8 z 6 + 24 a 6 z 6 − 6 a 4 z 6 − 12 a 8 z 4 + 34 a 6 z 4 − 11 a 4 z 4 − 10 a 8 z 2 + 22 a 6 z 2 − 6 a 4 z 2 − 3 a 8 + 4 a 6 {\displaystyle a^{6}z^{10}-a^{8}z^{8}+8a^{6}z^{8}-a^{4}z^{8}-6a^{8}z^{6}+24a^{6}z^{6}-6a^{4}z^{6}-12a^{8}z^{4}+34a^{6}z^{4}-11a^{4}z^{4}-10a^{8}z^{2}+22a^{6}z^{2}-6a^{4}z^{2}-3a^{8}+4a^{6}}