z 4 a 12 + 4 z 5 a 11 − 2 z 3 a 11 + 8 z 6 a 10 − 7 z 4 a 10 + z 2 a 10 + 11 z 7 a 9 − 13 z 5 a 9 + 3 z 3 a 9 + 12 z 8 a 8 − 18 z 6 a 8 + 4 z 4 a 8 + z 2 a 8 + 11 z 9 a 7 − 21 z 7 a 7 + 7 z 5 a 7 + z 3 a 7 − z a 7 + 8 z 10 a 6 − 17 z 8 a 6 + 5 z 6 a 6 + a 6 + 3 z 11 a 5 + 4 z 9 a 5 − 41 z 7 a 5 + 51 z 5 a 5 − 19 z 3 a 5 + z a 5 + 14 z 10 a 4 − 57 z 8 a 4 + 71 z 6 a 4 − 32 z 4 a 4 + 3 z 2 a 4 + a 4 + 3 z 11 a 3 − 3 z 9 a 3 − 27 z 7 a 3 + 50 z 5 a 3 − 24 z 3 a 3 + 3 z a 3 + 6 z 10 a 2 − 27 z 8 a 2 + 36 z 6 a 2 − 16 z 4 a 2 + 2 z 2 a 2 − a 2 + 4 z 9 a − 18 z 7 a + 23 z 5 a − 9 z 3 a + z a + z 8 − 4 z 6 + 4 z 4 − z 2 {\displaystyle z^{4}a^{12}+4z^{5}a^{11}-2z^{3}a^{11}+8z^{6}a^{10}-7z^{4}a^{10}+z^{2}a^{10}+11z^{7}a^{9}-13z^{5}a^{9}+3z^{3}a^{9}+12z^{8}a^{8}-18z^{6}a^{8}+4z^{4}a^{8}+z^{2}a^{8}+11z^{9}a^{7}-21z^{7}a^{7}+7z^{5}a^{7}+z^{3}a^{7}-za^{7}+8z^{10}a^{6}-17z^{8}a^{6}+5z^{6}a^{6}+a^{6}+3z^{11}a^{5}+4z^{9}a^{5}-41z^{7}a^{5}+51z^{5}a^{5}-19z^{3}a^{5}+za^{5}+14z^{10}a^{4}-57z^{8}a^{4}+71z^{6}a^{4}-32z^{4}a^{4}+3z^{2}a^{4}+a^{4}+3z^{11}a^{3}-3z^{9}a^{3}-27z^{7}a^{3}+50z^{5}a^{3}-24z^{3}a^{3}+3za^{3}+6z^{10}a^{2}-27z^{8}a^{2}+36z^{6}a^{2}-16z^{4}a^{2}+2z^{2}a^{2}-a^{2}+4z^{9}a-18z^{7}a+23z^{5}a-9z^{3}a+za+z^{8}-4z^{6}+4z^{4}-z^{2}}
