z 3 a 19 + 3 z 4 a 18 + 6 z 5 a 17 − 4 z 3 a 17 + z a 17 + 9 z 6 a 16 − 12 z 4 a 16 + 3 z 2 a 16 + 11 z 7 a 15 − 21 z 5 a 15 + 6 z 3 a 15 − z a 15 + 12 z 8 a 14 − 32 z 6 a 14 + 19 z 4 a 14 − 6 z 2 a 14 + 11 z 9 a 13 − 36 z 7 a 13 + 28 z 5 a 13 − 8 z 3 a 13 + 2 z a 13 + 8 z 10 a 12 − 28 z 8 a 12 + 19 z 6 a 12 + z 4 a 12 + 5 z 2 a 12 − 3 a 12 + 4 z 11 a 11 − 9 z 9 a 11 − 23 z 7 a 11 + 62 z 5 a 11 − 36 z 3 a 11 + 8 z a 11 + z 12 a 10 + 6 z 10 a 10 − 57 z 8 a 10 + 123 z 6 a 10 − 104 z 4 a 10 + 42 z 2 a 10 − 8 a 10 + 6 z 11 a 9 − 34 z 9 a 9 + 57 z 7 a 9 − 21 z 5 a 9 − 15 z 3 a 9 + 8 z a 9 + z 12 a 8 − z 10 a 8 − 25 z 8 a 8 + 87 z 6 a 8 − 105 z 4 a 8 + 51 z 2 a 8 − 10 a 8 + 2 z 11 a 7 − 14 z 9 a 7 + 33 z 7 a 7 − 28 z 5 a 7 + 2 z 3 a 7 + 4 z a 7 + z 10 a 6 − 8 z 8 a 6 + 24 z 6 a 6 − 34 z 4 a 6 + 23 z 2 a 6 − 6 a 6 {\displaystyle z^{3}a^{19}+3z^{4}a^{18}+6z^{5}a^{17}-4z^{3}a^{17}+za^{17}+9z^{6}a^{16}-12z^{4}a^{16}+3z^{2}a^{16}+11z^{7}a^{15}-21z^{5}a^{15}+6z^{3}a^{15}-za^{15}+12z^{8}a^{14}-32z^{6}a^{14}+19z^{4}a^{14}-6z^{2}a^{14}+11z^{9}a^{13}-36z^{7}a^{13}+28z^{5}a^{13}-8z^{3}a^{13}+2za^{13}+8z^{10}a^{12}-28z^{8}a^{12}+19z^{6}a^{12}+z^{4}a^{12}+5z^{2}a^{12}-3a^{12}+4z^{11}a^{11}-9z^{9}a^{11}-23z^{7}a^{11}+62z^{5}a^{11}-36z^{3}a^{11}+8za^{11}+z^{12}a^{10}+6z^{10}a^{10}-57z^{8}a^{10}+123z^{6}a^{10}-104z^{4}a^{10}+42z^{2}a^{10}-8a^{10}+6z^{11}a^{9}-34z^{9}a^{9}+57z^{7}a^{9}-21z^{5}a^{9}-15z^{3}a^{9}+8za^{9}+z^{12}a^{8}-z^{10}a^{8}-25z^{8}a^{8}+87z^{6}a^{8}-105z^{4}a^{8}+51z^{2}a^{8}-10a^{8}+2z^{11}a^{7}-14z^{9}a^{7}+33z^{7}a^{7}-28z^{5}a^{7}+2z^{3}a^{7}+4za^{7}+z^{10}a^{6}-8z^{8}a^{6}+24z^{6}a^{6}-34z^{4}a^{6}+23z^{2}a^{6}-6a^{6}}
