z 5 a 13 − 3 z 3 a 13 + 2 z a 13 + 2 z 6 a 12 − 4 z 4 a 12 + z 2 a 12 + 3 z 7 a 11 − 5 z 5 a 11 + 2 z 3 a 11 − z a 11 + 4 z 8 a 10 − 10 z 6 a 10 + 15 z 4 a 10 − 10 z 2 a 10 + 2 a 10 + 3 z 9 a 9 − 5 z 7 a 9 + 5 z 5 a 9 + z 3 a 9 − z a 9 + z 10 a 8 + 5 z 8 a 8 − 20 z 6 a 8 + 32 z 4 a 8 − 17 z 2 a 8 + 3 a 8 + 6 z 9 a 7 − 16 z 7 a 7 + 21 z 5 a 7 − 13 z 3 a 7 + 3 z a 7 + z 10 a 6 + 5 z 8 a 6 − 20 z 6 a 6 + 25 z 4 a 6 − 14 z 2 a 6 + 2 a 6 + 3 z 9 a 5 − 5 z 7 a 5 + z 5 a 5 − 3 z 3 a 5 + z a 5 + 4 z 8 a 4 − 11 z 6 a 4 + 9 z 4 a 4 − 6 z 2 a 4 + 2 a 4 + 3 z 7 a 3 − 9 z 5 a 3 + 6 z 3 a 3 + z 6 a 2 − 3 z 4 a 2 + 2 z 2 a 2 {\displaystyle z^{5}a^{13}-3z^{3}a^{13}+2za^{13}+2z^{6}a^{12}-4z^{4}a^{12}+z^{2}a^{12}+3z^{7}a^{11}-5z^{5}a^{11}+2z^{3}a^{11}-za^{11}+4z^{8}a^{10}-10z^{6}a^{10}+15z^{4}a^{10}-10z^{2}a^{10}+2a^{10}+3z^{9}a^{9}-5z^{7}a^{9}+5z^{5}a^{9}+z^{3}a^{9}-za^{9}+z^{10}a^{8}+5z^{8}a^{8}-20z^{6}a^{8}+32z^{4}a^{8}-17z^{2}a^{8}+3a^{8}+6z^{9}a^{7}-16z^{7}a^{7}+21z^{5}a^{7}-13z^{3}a^{7}+3za^{7}+z^{10}a^{6}+5z^{8}a^{6}-20z^{6}a^{6}+25z^{4}a^{6}-14z^{2}a^{6}+2a^{6}+3z^{9}a^{5}-5z^{7}a^{5}+z^{5}a^{5}-3z^{3}a^{5}+za^{5}+4z^{8}a^{4}-11z^{6}a^{4}+9z^{4}a^{4}-6z^{2}a^{4}+2a^{4}+3z^{7}a^{3}-9z^{5}a^{3}+6z^{3}a^{3}+z^{6}a^{2}-3z^{4}a^{2}+2z^{2}a^{2}}
