z 6 a 10 − 2 z 4 a 10 + z 2 a 10 + 4 z 7 a 9 − 11 z 5 a 9 + 7 z 3 a 9 + 5 z 8 a 8 − 12 z 6 a 8 + 4 z 4 a 8 + z 2 a 8 + 2 z 9 a 7 + 4 z 7 a 7 − 21 z 5 a 7 + 13 z 3 a 7 − 2 z a 7 + 9 z 8 a 6 − 21 z 6 a 6 + 13 z 4 a 6 − 5 z 2 a 6 + a 6 + 2 z 9 a 5 + 2 z 7 a 5 − 9 z 5 a 5 + 6 z 3 a 5 − 2 z a 5 + 4 z 8 a 4 − 8 z 6 a 4 + 12 z 4 a 4 − 6 z 2 a 4 + a 4 + 2 z 7 a 3 + z 5 a 3 + z 3 a 3 + 5 z 4 a 2 − z 2 a 2 − a 2 + z 3 a {\displaystyle z^{6}a^{10}-2z^{4}a^{10}+z^{2}a^{10}+4z^{7}a^{9}-11z^{5}a^{9}+7z^{3}a^{9}+5z^{8}a^{8}-12z^{6}a^{8}+4z^{4}a^{8}+z^{2}a^{8}+2z^{9}a^{7}+4z^{7}a^{7}-21z^{5}a^{7}+13z^{3}a^{7}-2za^{7}+9z^{8}a^{6}-21z^{6}a^{6}+13z^{4}a^{6}-5z^{2}a^{6}+a^{6}+2z^{9}a^{5}+2z^{7}a^{5}-9z^{5}a^{5}+6z^{3}a^{5}-2za^{5}+4z^{8}a^{4}-8z^{6}a^{4}+12z^{4}a^{4}-6z^{2}a^{4}+a^{4}+2z^{7}a^{3}+z^{5}a^{3}+z^{3}a^{3}+5z^{4}a^{2}-z^{2}a^{2}-a^{2}+z^{3}a}
