z 2 a 10 + 4 z 3 a 9 − 2 z a 9 + 2 z 6 a 8 − 2 z 4 a 8 + z 2 a 8 + 2 a 8 + 5 z 7 a 7 − 18 z 5 a 7 + 26 z 3 a 7 − 14 z a 7 + 4 z 8 a 6 − 13 z 6 a 6 + 16 z 4 a 6 − 17 z 2 a 6 + 10 a 6 + z 9 a 5 + 5 z 7 a 5 − 31 z 5 a 5 + 42 z 3 a 5 − 21 z a 5 + 6 z 8 a 4 − 24 z 6 a 4 + 31 z 4 a 4 − 26 z 2 a 4 + 13 a 4 + z 9 a 3 + z 7 a 3 − 18 z 5 a 3 + 28 z 3 a 3 − 13 z a 3 + 2 z 8 a 2 − 9 z 6 a 2 + 13 z 4 a 2 − 9 z 2 a 2 + 4 a 2 + z 7 a − 5 z 5 a + 8 z 3 a − 4 z a {\displaystyle z^{2}a^{10}+4z^{3}a^{9}-2za^{9}+2z^{6}a^{8}-2z^{4}a^{8}+z^{2}a^{8}+2a^{8}+5z^{7}a^{7}-18z^{5}a^{7}+26z^{3}a^{7}-14za^{7}+4z^{8}a^{6}-13z^{6}a^{6}+16z^{4}a^{6}-17z^{2}a^{6}+10a^{6}+z^{9}a^{5}+5z^{7}a^{5}-31z^{5}a^{5}+42z^{3}a^{5}-21za^{5}+6z^{8}a^{4}-24z^{6}a^{4}+31z^{4}a^{4}-26z^{2}a^{4}+13a^{4}+z^{9}a^{3}+z^{7}a^{3}-18z^{5}a^{3}+28z^{3}a^{3}-13za^{3}+2z^{8}a^{2}-9z^{6}a^{2}+13z^{4}a^{2}-9z^{2}a^{2}+4a^{2}+z^{7}a-5z^{5}a+8z^{3}a-4za}
