z 5 a 17 − z 3 a 17 + 4 z 6 a 16 − 4 z 4 a 16 + 9 z 7 a 15 − 10 z 5 a 15 + 2 z 3 a 15 + 16 z 8 a 14 − 27 z 6 a 14 + 20 z 4 a 14 − 6 z 2 a 14 + 22 z 9 a 13 − 49 z 7 a 13 + 51 z 5 a 13 − 26 z 3 a 13 + 6 z a 13 + 21 z 10 a 12 − 41 z 8 a 12 + 17 z 6 a 12 + 14 z 4 a 12 − 7 z 2 a 12 − a 12 + 13 z 11 a 11 − z 9 a 11 − 86 z 7 a 11 + 139 z 5 a 11 − 85 z 3 a 11 + 20 z a 11 + 5 z 12 a 10 + 24 z 10 a 10 − 111 z 8 a 10 + 120 z 6 a 10 − 46 z 4 a 10 + 10 z 2 a 10 − 6 a 10 + z 13 a 9 + 20 z 11 a 9 − 47 z 9 a 9 − 37 z 7 a 9 + 143 z 5 a 9 − 120 z 3 a 9 + 37 z a 9 + 8 z 12 a 8 + z 10 a 8 − 83 z 8 a 8 + 136 z 6 a 8 − 97 z 4 a 8 + 48 z 2 a 8 − 16 a 8 + z 13 a 7 + 11 z 11 a 7 − 38 z 9 a 7 − 3 z 7 a 7 + 92 z 5 a 7 − 98 z 3 a 7 + 35 z a 7 + 3 z 12 a 6 + z 10 a 6 − 45 z 8 a 6 + 96 z 6 a 6 − 92 z 4 a 6 + 53 z 2 a 6 − 16 a 6 + 4 z 11 a 5 − 13 z 9 a 5 + 39 z 5 a 5 − 46 z 3 a 5 + 16 z a 5 + 3 z 10 a 4 − 16 z 8 a 4 + 32 z 6 a 4 − 31 z 4 a 4 + 16 z 2 a 4 − 4 a 4 + z 9 a 3 − 6 z 7 a 3 + 13 z 5 a 3 − 12 z 3 a 3 + 4 z a 3 {\displaystyle z^{5}a^{17}-z^{3}a^{17}+4z^{6}a^{16}-4z^{4}a^{16}+9z^{7}a^{15}-10z^{5}a^{15}+2z^{3}a^{15}+16z^{8}a^{14}-27z^{6}a^{14}+20z^{4}a^{14}-6z^{2}a^{14}+22z^{9}a^{13}-49z^{7}a^{13}+51z^{5}a^{13}-26z^{3}a^{13}+6za^{13}+21z^{10}a^{12}-41z^{8}a^{12}+17z^{6}a^{12}+14z^{4}a^{12}-7z^{2}a^{12}-a^{12}+13z^{11}a^{11}-z^{9}a^{11}-86z^{7}a^{11}+139z^{5}a^{11}-85z^{3}a^{11}+20za^{11}+5z^{12}a^{10}+24z^{10}a^{10}-111z^{8}a^{10}+120z^{6}a^{10}-46z^{4}a^{10}+10z^{2}a^{10}-6a^{10}+z^{13}a^{9}+20z^{11}a^{9}-47z^{9}a^{9}-37z^{7}a^{9}+143z^{5}a^{9}-120z^{3}a^{9}+37za^{9}+8z^{12}a^{8}+z^{10}a^{8}-83z^{8}a^{8}+136z^{6}a^{8}-97z^{4}a^{8}+48z^{2}a^{8}-16a^{8}+z^{13}a^{7}+11z^{11}a^{7}-38z^{9}a^{7}-3z^{7}a^{7}+92z^{5}a^{7}-98z^{3}a^{7}+35za^{7}+3z^{12}a^{6}+z^{10}a^{6}-45z^{8}a^{6}+96z^{6}a^{6}-92z^{4}a^{6}+53z^{2}a^{6}-16a^{6}+4z^{11}a^{5}-13z^{9}a^{5}+39z^{5}a^{5}-46z^{3}a^{5}+16za^{5}+3z^{10}a^{4}-16z^{8}a^{4}+32z^{6}a^{4}-31z^{4}a^{4}+16z^{2}a^{4}-4a^{4}+z^{9}a^{3}-6z^{7}a^{3}+13z^{5}a^{3}-12z^{3}a^{3}+4za^{3}}