z 6 a 10 − 4 z 4 a 10 + 2 z 2 a 10 + 2 z 7 a 9 − 10 z 5 a 9 + 10 z 3 a 9 − 2 z a 9 + z 8 a 8 − 6 z 6 a 8 + 7 z 4 a 8 − 3 z 2 a 8 + a 8 + z 7 a 7 − 9 z 5 a 7 + 12 z 3 a 7 − 4 z a 7 + 3 z 8 a 6 − 20 z 6 a 6 + 33 z 4 a 6 − 18 z 2 a 6 + 3 a 6 + 2 z 9 a 5 − 11 z 7 a 5 + 13 z 5 a 5 − 3 z 3 a 5 − z a 5 + 5 z 8 a 4 − 28 z 6 a 4 + 41 z 4 a 4 − 19 z 2 a 4 + 2 a 4 + 2 z 9 a 3 − 9 z 7 a 3 + 8 z 5 a 3 − 2 z 3 a 3 + z a 3 + 3 z 8 a 2 − 15 z 6 a 2 + 19 z 4 a 2 − 6 z 2 a 2 − a 2 + z 7 a − 4 z 5 a + 3 z 3 a {\displaystyle z^{6}a^{10}-4z^{4}a^{10}+2z^{2}a^{10}+2z^{7}a^{9}-10z^{5}a^{9}+10z^{3}a^{9}-2za^{9}+z^{8}a^{8}-6z^{6}a^{8}+7z^{4}a^{8}-3z^{2}a^{8}+a^{8}+z^{7}a^{7}-9z^{5}a^{7}+12z^{3}a^{7}-4za^{7}+3z^{8}a^{6}-20z^{6}a^{6}+33z^{4}a^{6}-18z^{2}a^{6}+3a^{6}+2z^{9}a^{5}-11z^{7}a^{5}+13z^{5}a^{5}-3z^{3}a^{5}-za^{5}+5z^{8}a^{4}-28z^{6}a^{4}+41z^{4}a^{4}-19z^{2}a^{4}+2a^{4}+2z^{9}a^{3}-9z^{7}a^{3}+8z^{5}a^{3}-2z^{3}a^{3}+za^{3}+3z^{8}a^{2}-15z^{6}a^{2}+19z^{4}a^{2}-6z^{2}a^{2}-a^{2}+z^{7}a-4z^{5}a+3z^{3}a}