z 5 a 13 − z 3 a 13 + 4 z 6 a 12 − 6 z 4 a 12 + z 2 a 12 + 7 z 7 a 11 − 12 z 5 a 11 + 5 z 3 a 11 − z a 11 + 7 z 8 a 10 − 10 z 6 a 10 + 3 z 4 a 10 + 4 z 9 a 9 + z 7 a 9 − 12 z 5 a 9 + 11 z 3 a 9 − 2 z a 9 + z 10 a 8 + 8 z 8 a 8 − 16 z 6 a 8 + 9 z 4 a 8 + z 2 a 8 + 5 z 9 a 7 − 4 z 7 a 7 − 4 z 5 a 7 + 8 z 3 a 7 − 4 z a 7 + z 10 a 6 + z 8 a 6 + 3 z 6 a 6 − 8 z 4 a 6 + z 2 a 6 + 2 a 6 + z 9 a 5 + 2 z 7 a 5 − 4 z 5 a 5 + 2 z 3 a 5 − 3 z a 5 + 5 z 6 a 4 − 8 z 4 a 4 − z 2 a 4 + 3 a 4 + z 5 a 3 − z 3 a 3 {\displaystyle z^{5}a^{13}-z^{3}a^{13}+4z^{6}a^{12}-6z^{4}a^{12}+z^{2}a^{12}+7z^{7}a^{11}-12z^{5}a^{11}+5z^{3}a^{11}-za^{11}+7z^{8}a^{10}-10z^{6}a^{10}+3z^{4}a^{10}+4z^{9}a^{9}+z^{7}a^{9}-12z^{5}a^{9}+11z^{3}a^{9}-2za^{9}+z^{10}a^{8}+8z^{8}a^{8}-16z^{6}a^{8}+9z^{4}a^{8}+z^{2}a^{8}+5z^{9}a^{7}-4z^{7}a^{7}-4z^{5}a^{7}+8z^{3}a^{7}-4za^{7}+z^{10}a^{6}+z^{8}a^{6}+3z^{6}a^{6}-8z^{4}a^{6}+z^{2}a^{6}+2a^{6}+z^{9}a^{5}+2z^{7}a^{5}-4z^{5}a^{5}+2z^{3}a^{5}-3za^{5}+5z^{6}a^{4}-8z^{4}a^{4}-z^{2}a^{4}+3a^{4}+z^{5}a^{3}-z^{3}a^{3}}
