z 6 a 10 − 3 z 4 a 10 + 2 z 2 a 10 + 3 z 7 a 9 − 10 z 5 a 9 + 8 z 3 a 9 − z a 9 + 3 z 8 a 8 − 8 z 6 a 8 + 3 z 4 a 8 + z 9 a 7 + 2 z 7 a 7 − 11 z 5 a 7 + 6 z 3 a 7 − z a 7 + 4 z 8 a 6 − 9 z 6 a 6 + 4 z 4 a 6 − a 6 + z 9 a 5 − z 7 a 5 + 2 z 5 a 5 − 3 z 3 a 5 + z a 5 + z 8 a 4 − 2 z 4 a 4 + 7 z 2 a 4 − 3 a 4 + 3 z 5 a 3 − z 3 a 3 + z a 3 + 5 z 2 a 2 − 3 a 2 {\displaystyle z^{6}a^{10}-3z^{4}a^{10}+2z^{2}a^{10}+3z^{7}a^{9}-10z^{5}a^{9}+8z^{3}a^{9}-za^{9}+3z^{8}a^{8}-8z^{6}a^{8}+3z^{4}a^{8}+z^{9}a^{7}+2z^{7}a^{7}-11z^{5}a^{7}+6z^{3}a^{7}-za^{7}+4z^{8}a^{6}-9z^{6}a^{6}+4z^{4}a^{6}-a^{6}+z^{9}a^{5}-z^{7}a^{5}+2z^{5}a^{5}-3z^{3}a^{5}+za^{5}+z^{8}a^{4}-2z^{4}a^{4}+7z^{2}a^{4}-3a^{4}+3z^{5}a^{3}-z^{3}a^{3}+za^{3}+5z^{2}a^{2}-3a^{2}}