z 7 a 15 − 3 z 5 a 15 + 2 z 3 a 15 + 4 z 8 a 14 − 11 z 6 a 14 + 7 z 4 a 14 − z 2 a 14 + 9 z 9 a 13 − 27 z 7 a 13 + 27 z 5 a 13 − 17 z 3 a 13 + 5 z a 13 + 12 z 10 a 12 − 35 z 8 a 12 + 37 z 6 a 12 − 26 z 4 a 12 + 9 z 2 a 12 − a 12 + 9 z 11 a 11 − 14 z 9 a 11 − 13 z 7 a 11 + 36 z 5 a 11 − 26 z 3 a 11 + 5 z a 11 + 3 z 12 a 10 + 16 z 10 a 10 − 73 z 8 a 10 + 107 z 6 a 10 − 72 z 4 a 10 + 21 z 2 a 10 − 2 a 10 + 18 z 11 a 9 − 46 z 9 a 9 + 43 z 7 a 9 − 10 z 5 a 9 − 2 z 3 a 9 + 2 z a 9 + 3 z 12 a 8 + 16 z 10 a 8 − 65 z 8 a 8 + 99 z 6 a 8 − 70 z 4 a 8 + 26 z 2 a 8 − 4 a 8 + 9 z 11 a 7 − 12 z 9 a 7 + 5 z 7 a 7 + 2 z 5 a 7 − 2 z 3 a 7 + 2 z a 7 + 12 z 10 a 6 − 23 z 8 a 6 + 24 z 6 a 6 − 21 z 4 a 6 + 12 z 2 a 6 − 4 a 6 + 11 z 9 a 5 − 19 z 7 a 5 + 10 z 5 a 5 − 3 z 3 a 5 + 8 z 8 a 4 − 15 z 6 a 4 + 8 z 4 a 4 − 2 z 2 a 4 + 4 z 7 a 3 − 8 z 5 a 3 + 4 z 3 a 3 + z 6 a 2 − 2 z 4 a 2 + z 2 a 2 {\displaystyle z^{7}a^{15}-3z^{5}a^{15}+2z^{3}a^{15}+4z^{8}a^{14}-11z^{6}a^{14}+7z^{4}a^{14}-z^{2}a^{14}+9z^{9}a^{13}-27z^{7}a^{13}+27z^{5}a^{13}-17z^{3}a^{13}+5za^{13}+12z^{10}a^{12}-35z^{8}a^{12}+37z^{6}a^{12}-26z^{4}a^{12}+9z^{2}a^{12}-a^{12}+9z^{11}a^{11}-14z^{9}a^{11}-13z^{7}a^{11}+36z^{5}a^{11}-26z^{3}a^{11}+5za^{11}+3z^{12}a^{10}+16z^{10}a^{10}-73z^{8}a^{10}+107z^{6}a^{10}-72z^{4}a^{10}+21z^{2}a^{10}-2a^{10}+18z^{11}a^{9}-46z^{9}a^{9}+43z^{7}a^{9}-10z^{5}a^{9}-2z^{3}a^{9}+2za^{9}+3z^{12}a^{8}+16z^{10}a^{8}-65z^{8}a^{8}+99z^{6}a^{8}-70z^{4}a^{8}+26z^{2}a^{8}-4a^{8}+9z^{11}a^{7}-12z^{9}a^{7}+5z^{7}a^{7}+2z^{5}a^{7}-2z^{3}a^{7}+2za^{7}+12z^{10}a^{6}-23z^{8}a^{6}+24z^{6}a^{6}-21z^{4}a^{6}+12z^{2}a^{6}-4a^{6}+11z^{9}a^{5}-19z^{7}a^{5}+10z^{5}a^{5}-3z^{3}a^{5}+8z^{8}a^{4}-15z^{6}a^{4}+8z^{4}a^{4}-2z^{2}a^{4}+4z^{7}a^{3}-8z^{5}a^{3}+4z^{3}a^{3}+z^{6}a^{2}-2z^{4}a^{2}+z^{2}a^{2}}
