z 5 a 13 − z 3 a 13 + 4 z 6 a 12 − 5 z 4 a 12 + z 2 a 12 + 8 z 7 a 11 − 12 z 5 a 11 + 5 z 3 a 11 − z a 11 + 10 z 8 a 10 − 15 z 6 a 10 + 6 z 4 a 10 + 9 z 9 a 9 − 13 z 7 a 9 + 6 z 5 a 9 + 6 z 10 a 8 − 8 z 8 a 8 + 8 z 6 a 8 − 9 z 4 a 8 + 5 z 2 a 8 + 2 z 11 a 7 + 6 z 9 a 7 − 22 z 7 a 7 + 25 z 5 a 7 − 10 z 3 a 7 − z a 7 + 10 z 10 a 6 − 31 z 8 a 6 + 42 z 6 a 6 − 26 z 4 a 6 + z 2 a 6 + 3 a 6 + 2 z 11 a 5 + z 9 a 5 − 14 z 7 a 5 + 16 z 5 a 5 − 4 z 3 a 5 − 3 z a 5 + 4 z 10 a 4 − 10 z 8 a 4 + 3 z 6 a 4 + 8 z 4 a 4 − 11 z 2 a 4 + 5 a 4 + 4 z 9 a 3 − 12 z 7 a 3 + 6 z 5 a 3 + 4 z 3 a 3 − 2 z a 3 + 3 z 8 a 2 − 12 z 6 a 2 + 14 z 4 a 2 − 6 z 2 a 2 + a 2 + z 7 a − 4 z 5 a + 4 z 3 a − z a {\displaystyle z^{5}a^{13}-z^{3}a^{13}+4z^{6}a^{12}-5z^{4}a^{12}+z^{2}a^{12}+8z^{7}a^{11}-12z^{5}a^{11}+5z^{3}a^{11}-za^{11}+10z^{8}a^{10}-15z^{6}a^{10}+6z^{4}a^{10}+9z^{9}a^{9}-13z^{7}a^{9}+6z^{5}a^{9}+6z^{10}a^{8}-8z^{8}a^{8}+8z^{6}a^{8}-9z^{4}a^{8}+5z^{2}a^{8}+2z^{11}a^{7}+6z^{9}a^{7}-22z^{7}a^{7}+25z^{5}a^{7}-10z^{3}a^{7}-za^{7}+10z^{10}a^{6}-31z^{8}a^{6}+42z^{6}a^{6}-26z^{4}a^{6}+z^{2}a^{6}+3a^{6}+2z^{11}a^{5}+z^{9}a^{5}-14z^{7}a^{5}+16z^{5}a^{5}-4z^{3}a^{5}-3za^{5}+4z^{10}a^{4}-10z^{8}a^{4}+3z^{6}a^{4}+8z^{4}a^{4}-11z^{2}a^{4}+5a^{4}+4z^{9}a^{3}-12z^{7}a^{3}+6z^{5}a^{3}+4z^{3}a^{3}-2za^{3}+3z^{8}a^{2}-12z^{6}a^{2}+14z^{4}a^{2}-6z^{2}a^{2}+a^{2}+z^{7}a-4z^{5}a+4z^{3}a-za}
