z 4 a 16 + 4 z 5 a 15 − 2 z 3 a 15 + 8 z 6 a 14 − 7 z 4 a 14 + z 2 a 14 + 11 z 7 a 13 − 13 z 5 a 13 + 3 z 3 a 13 + 12 z 8 a 12 − 18 z 6 a 12 + 4 z 4 a 12 + z 2 a 12 + 11 z 9 a 11 − 21 z 7 a 11 + 7 z 5 a 11 + z 3 a 11 − z a 11 + 8 z 10 a 10 − 16 z 8 a 10 + z 6 a 10 + 3 z 4 a 10 + 2 z 2 a 10 − a 10 + 4 z 11 a 9 − 2 z 9 a 9 − 28 z 7 a 9 + 38 z 5 a 9 − 15 z 3 a 9 + 2 z a 9 + z 12 a 8 + 9 z 10 a 8 − 52 z 8 a 8 + 81 z 6 a 8 − 59 z 4 a 8 + 26 z 2 a 8 − 5 a 8 + 7 z 11 a 7 − 29 z 9 a 7 + 31 z 7 a 7 − 3 z 5 a 7 − 7 z 3 a 7 + 2 z a 7 + z 12 a 6 + 4 z 10 a 6 − 43 z 8 a 6 + 95 z 6 a 6 − 86 z 4 a 6 + 35 z 2 a 6 − 5 a 6 + 3 z 11 a 5 − 15 z 9 a 5 + 21 z 7 a 5 − 6 z 5 a 5 − 2 z 3 a 5 − z a 5 + 3 z 10 a 4 − 19 z 8 a 4 + 41 z 6 a 4 − 36 z 4 a 4 + 11 z 2 a 4 + z 9 a 3 − 6 z 7 a 3 + 11 z 5 a 3 − 6 z 3 a 3 {\displaystyle z^{4}a^{16}+4z^{5}a^{15}-2z^{3}a^{15}+8z^{6}a^{14}-7z^{4}a^{14}+z^{2}a^{14}+11z^{7}a^{13}-13z^{5}a^{13}+3z^{3}a^{13}+12z^{8}a^{12}-18z^{6}a^{12}+4z^{4}a^{12}+z^{2}a^{12}+11z^{9}a^{11}-21z^{7}a^{11}+7z^{5}a^{11}+z^{3}a^{11}-za^{11}+8z^{10}a^{10}-16z^{8}a^{10}+z^{6}a^{10}+3z^{4}a^{10}+2z^{2}a^{10}-a^{10}+4z^{11}a^{9}-2z^{9}a^{9}-28z^{7}a^{9}+38z^{5}a^{9}-15z^{3}a^{9}+2za^{9}+z^{12}a^{8}+9z^{10}a^{8}-52z^{8}a^{8}+81z^{6}a^{8}-59z^{4}a^{8}+26z^{2}a^{8}-5a^{8}+7z^{11}a^{7}-29z^{9}a^{7}+31z^{7}a^{7}-3z^{5}a^{7}-7z^{3}a^{7}+2za^{7}+z^{12}a^{6}+4z^{10}a^{6}-43z^{8}a^{6}+95z^{6}a^{6}-86z^{4}a^{6}+35z^{2}a^{6}-5a^{6}+3z^{11}a^{5}-15z^{9}a^{5}+21z^{7}a^{5}-6z^{5}a^{5}-2z^{3}a^{5}-za^{5}+3z^{10}a^{4}-19z^{8}a^{4}+41z^{6}a^{4}-36z^{4}a^{4}+11z^{2}a^{4}+z^{9}a^{3}-6z^{7}a^{3}+11z^{5}a^{3}-6z^{3}a^{3}}
