z 6 a 10 − 3 z 4 a 10 + 2 z 2 a 10 + 3 z 7 a 9 − 10 z 5 a 9 + 10 z 3 a 9 − 4 z a 9 + 3 z 8 a 8 − 6 z 6 a 8 − z 4 a 8 + z 2 a 8 + 2 a 8 + z 9 a 7 + 7 z 7 a 7 − 31 z 5 a 7 + 36 z 3 a 7 − 17 z a 7 + 7 z 8 a 6 − 18 z 6 a 6 + 17 z 4 a 6 − 15 z 2 a 6 + 9 a 6 + z 9 a 5 + 8 z 7 a 5 − 31 z 5 a 5 + 42 z 3 a 5 − 21 z a 5 + 4 z 8 a 4 − 10 z 6 a 4 + 19 z 4 a 4 − 20 z 2 a 4 + 11 a 4 + 4 z 7 a 3 − 10 z 5 a 3 + 19 z 3 a 3 − 11 z a 3 + z 6 a 2 + 4 z 4 a 2 − 6 z 2 a 2 + 3 a 2 + 3 z 3 a − 3 z a {\displaystyle z^{6}a^{10}-3z^{4}a^{10}+2z^{2}a^{10}+3z^{7}a^{9}-10z^{5}a^{9}+10z^{3}a^{9}-4za^{9}+3z^{8}a^{8}-6z^{6}a^{8}-z^{4}a^{8}+z^{2}a^{8}+2a^{8}+z^{9}a^{7}+7z^{7}a^{7}-31z^{5}a^{7}+36z^{3}a^{7}-17za^{7}+7z^{8}a^{6}-18z^{6}a^{6}+17z^{4}a^{6}-15z^{2}a^{6}+9a^{6}+z^{9}a^{5}+8z^{7}a^{5}-31z^{5}a^{5}+42z^{3}a^{5}-21za^{5}+4z^{8}a^{4}-10z^{6}a^{4}+19z^{4}a^{4}-20z^{2}a^{4}+11a^{4}+4z^{7}a^{3}-10z^{5}a^{3}+19z^{3}a^{3}-11za^{3}+z^{6}a^{2}+4z^{4}a^{2}-6z^{2}a^{2}+3a^{2}+3z^{3}a-3za}
