z 8 a 12 − 4 z 6 a 12 + 5 z 4 a 12 − 2 z 2 a 12 + 4 z 9 a 11 − 16 z 7 a 11 + 21 z 5 a 11 − 11 z 3 a 11 + 2 z a 11 + 7 z 10 a 10 − 25 z 8 a 10 + 27 z 6 a 10 − 10 z 4 a 10 + z 2 a 10 + 6 z 11 a 9 − 10 z 9 a 9 − 18 z 7 a 9 + 40 z 5 a 9 − 22 z 3 a 9 + 4 z a 9 + 2 z 12 a 8 + 15 z 10 a 8 − 65 z 8 a 8 + 70 z 6 a 8 − 23 z 4 a 8 − z 2 a 8 + a 8 + 14 z 11 a 7 − 21 z 9 a 7 − 31 z 7 a 7 + 61 z 5 a 7 − 27 z 3 a 7 + 2 z a 7 + 2 z 12 a 6 + 24 z 10 a 6 − 69 z 8 a 6 + 41 z 6 a 6 + 11 z 4 a 6 − 14 z 2 a 6 + 3 a 6 + 8 z 11 a 5 + 14 z 9 a 5 − 71 z 7 a 5 + 66 z 5 a 5 − 20 z 3 a 5 + z a 5 + 16 z 10 a 4 − 11 z 8 a 4 − 29 z 6 a 4 + 33 z 4 a 4 − 11 z 2 a 4 + 2 a 4 + 21 z 9 a 3 − 30 z 7 a 3 + 11 z 5 a 3 − 2 z 3 a 3 + z a 3 + 19 z 8 a 2 − 26 z 6 a 2 + 11 z 4 a 2 − z 2 a 2 − a 2 + 12 z 7 a − 12 z 5 a + 2 z 3 a + 5 z 6 − 3 z 4 + z 5 a − 1 {\displaystyle z^{8}a^{12}-4z^{6}a^{12}+5z^{4}a^{12}-2z^{2}a^{12}+4z^{9}a^{11}-16z^{7}a^{11}+21z^{5}a^{11}-11z^{3}a^{11}+2za^{11}+7z^{10}a^{10}-25z^{8}a^{10}+27z^{6}a^{10}-10z^{4}a^{10}+z^{2}a^{10}+6z^{11}a^{9}-10z^{9}a^{9}-18z^{7}a^{9}+40z^{5}a^{9}-22z^{3}a^{9}+4za^{9}+2z^{12}a^{8}+15z^{10}a^{8}-65z^{8}a^{8}+70z^{6}a^{8}-23z^{4}a^{8}-z^{2}a^{8}+a^{8}+14z^{11}a^{7}-21z^{9}a^{7}-31z^{7}a^{7}+61z^{5}a^{7}-27z^{3}a^{7}+2za^{7}+2z^{12}a^{6}+24z^{10}a^{6}-69z^{8}a^{6}+41z^{6}a^{6}+11z^{4}a^{6}-14z^{2}a^{6}+3a^{6}+8z^{11}a^{5}+14z^{9}a^{5}-71z^{7}a^{5}+66z^{5}a^{5}-20z^{3}a^{5}+za^{5}+16z^{10}a^{4}-11z^{8}a^{4}-29z^{6}a^{4}+33z^{4}a^{4}-11z^{2}a^{4}+2a^{4}+21z^{9}a^{3}-30z^{7}a^{3}+11z^{5}a^{3}-2z^{3}a^{3}+za^{3}+19z^{8}a^{2}-26z^{6}a^{2}+11z^{4}a^{2}-z^{2}a^{2}-a^{2}+12z^{7}a-12z^{5}a+2z^{3}a+5z^{6}-3z^{4}+z^{5}a^{-1}}
