z 7 a 11 − 3 z 5 a 11 + 3 z 3 a 11 − z a 11 + 4 z 8 a 10 − 13 z 6 a 10 + 14 z 4 a 10 − 6 z 2 a 10 + a 10 + 6 z 9 a 9 − 15 z 7 a 9 + 6 z 5 a 9 + 3 z 3 a 9 − z a 9 + 4 z 10 a 8 + 3 z 8 a 8 − 40 z 6 a 8 + 49 z 4 a 8 − 24 z 2 a 8 + 4 a 8 + z 11 a 7 + 15 z 9 a 7 − 49 z 7 a 7 + 41 z 5 a 7 − 17 z 3 a 7 + 4 z a 7 + 8 z 10 a 6 − 4 z 8 a 6 − 41 z 6 a 6 + 62 z 4 a 6 − 35 z 2 a 6 + 6 a 6 + z 11 a 5 + 14 z 9 a 5 − 46 z 7 a 5 + 55 z 5 a 5 − 31 z 3 a 5 + 8 z a 5 + 4 z 10 a 4 − z 8 a 4 − 16 z 6 a 4 + 37 z 4 a 4 − 24 z 2 a 4 + 4 a 4 + 5 z 9 a 3 − 13 z 7 a 3 + 27 z 5 a 3 − 18 z 3 a 3 + 5 z a 3 + 2 z 8 a 2 − 2 z 6 a 2 + 11 z 4 a 2 − 9 z 2 a 2 + a 2 + 4 z 5 a − 4 z 3 a + z a + z 4 − 2 z 2 + 1 {\displaystyle z^{7}a^{11}-3z^{5}a^{11}+3z^{3}a^{11}-za^{11}+4z^{8}a^{10}-13z^{6}a^{10}+14z^{4}a^{10}-6z^{2}a^{10}+a^{10}+6z^{9}a^{9}-15z^{7}a^{9}+6z^{5}a^{9}+3z^{3}a^{9}-za^{9}+4z^{10}a^{8}+3z^{8}a^{8}-40z^{6}a^{8}+49z^{4}a^{8}-24z^{2}a^{8}+4a^{8}+z^{11}a^{7}+15z^{9}a^{7}-49z^{7}a^{7}+41z^{5}a^{7}-17z^{3}a^{7}+4za^{7}+8z^{10}a^{6}-4z^{8}a^{6}-41z^{6}a^{6}+62z^{4}a^{6}-35z^{2}a^{6}+6a^{6}+z^{11}a^{5}+14z^{9}a^{5}-46z^{7}a^{5}+55z^{5}a^{5}-31z^{3}a^{5}+8za^{5}+4z^{10}a^{4}-z^{8}a^{4}-16z^{6}a^{4}+37z^{4}a^{4}-24z^{2}a^{4}+4a^{4}+5z^{9}a^{3}-13z^{7}a^{3}+27z^{5}a^{3}-18z^{3}a^{3}+5za^{3}+2z^{8}a^{2}-2z^{6}a^{2}+11z^{4}a^{2}-9z^{2}a^{2}+a^{2}+4z^{5}a-4z^{3}a+za+z^{4}-2z^{2}+1}