z 4 a 10 + 3 z 2 a 10 + 2 a 10 − 3 z 6 a 8 − 11 z 4 a 8 − 13 z 2 a 8 − 5 a 8 + 2 z 8 a 6 + 9 z 6 a 6 + 15 z 4 a 6 + 11 z 2 a 6 + 2 a 6 + z 8 a 4 + 3 z 6 a 4 + 3 z 4 a 4 + 3 z 2 a 4 + 2 a 4 − z 6 a 2 − 3 z 4 a 2 − 2 z 2 a 2 {\displaystyle z^{4}a^{10}+3z^{2}a^{10}+2a^{10}-3z^{6}a^{8}-11z^{4}a^{8}-13z^{2}a^{8}-5a^{8}+2z^{8}a^{6}+9z^{6}a^{6}+15z^{4}a^{6}+11z^{2}a^{6}+2a^{6}+z^{8}a^{4}+3z^{6}a^{4}+3z^{4}a^{4}+3z^{2}a^{4}+2a^{4}-z^{6}a^{2}-3z^{4}a^{2}-2z^{2}a^{2}}
