z 3 a 15 + 3 z 4 a 14 + 6 z 5 a 13 − 4 z 3 a 13 + z a 13 + 9 z 6 a 12 − 12 z 4 a 12 + 3 z 2 a 12 + 11 z 7 a 11 − 22 z 5 a 11 + 9 z 3 a 11 − 2 z a 11 + 11 z 8 a 10 − 28 z 6 a 10 + 15 z 4 a 10 − 4 z 2 a 10 + 9 z 9 a 9 − 26 z 7 a 9 + 13 z 5 a 9 + z 3 a 9 + 6 z 10 a 8 − 19 z 8 a 8 + 10 z 6 a 8 + 7 z 2 a 8 − 3 a 8 + 2 z 11 a 7 + z 9 a 7 − 36 z 7 a 7 + 65 z 5 a 7 − 35 z 3 a 7 + 6 z a 7 + 9 z 10 a 6 − 49 z 8 a 6 + 88 z 6 a 6 − 65 z 4 a 6 + 24 z 2 a 6 − 4 a 6 + 2 z 11 a 5 − 7 z 9 a 5 − 5 z 7 a 5 + 36 z 5 a 5 − 31 z 3 a 5 + 5 z a 5 + 3 z 10 a 4 − 19 z 8 a 4 + 41 z 6 a 4 − 35 z 4 a 4 + 10 z 2 a 4 + z 9 a 3 − 6 z 7 a 3 + 12 z 5 a 3 − 9 z 3 a 3 + 2 z a 3 {\displaystyle z^{3}a^{15}+3z^{4}a^{14}+6z^{5}a^{13}-4z^{3}a^{13}+za^{13}+9z^{6}a^{12}-12z^{4}a^{12}+3z^{2}a^{12}+11z^{7}a^{11}-22z^{5}a^{11}+9z^{3}a^{11}-2za^{11}+11z^{8}a^{10}-28z^{6}a^{10}+15z^{4}a^{10}-4z^{2}a^{10}+9z^{9}a^{9}-26z^{7}a^{9}+13z^{5}a^{9}+z^{3}a^{9}+6z^{10}a^{8}-19z^{8}a^{8}+10z^{6}a^{8}+7z^{2}a^{8}-3a^{8}+2z^{11}a^{7}+z^{9}a^{7}-36z^{7}a^{7}+65z^{5}a^{7}-35z^{3}a^{7}+6za^{7}+9z^{10}a^{6}-49z^{8}a^{6}+88z^{6}a^{6}-65z^{4}a^{6}+24z^{2}a^{6}-4a^{6}+2z^{11}a^{5}-7z^{9}a^{5}-5z^{7}a^{5}+36z^{5}a^{5}-31z^{3}a^{5}+5za^{5}+3z^{10}a^{4}-19z^{8}a^{4}+41z^{6}a^{4}-35z^{4}a^{4}+10z^{2}a^{4}+z^{9}a^{3}-6z^{7}a^{3}+12z^{5}a^{3}-9z^{3}a^{3}+2za^{3}}
