z 7 a 11 − 4 z 5 a 11 + 5 z 3 a 11 − 2 z a 11 + 3 z 8 a 10 − 11 z 6 a 10 + 13 z 4 a 10 − 6 z 2 a 10 + a 10 + 4 z 9 a 9 − 10 z 7 a 9 + 4 z 5 a 9 + 3 z 3 a 9 − z a 9 + 3 z 10 a 8 + z 8 a 8 − 23 z 6 a 8 + 31 z 4 a 8 − 15 z 2 a 8 + 2 a 8 + z 11 a 7 + 11 z 9 a 7 − 34 z 7 a 7 + 31 z 5 a 7 − 11 z 3 a 7 + z a 7 + 8 z 10 a 6 − 3 z 8 a 6 − 31 z 6 a 6 + 42 z 4 a 6 − 18 z 2 a 6 + 2 a 6 + z 11 a 5 + 18 z 9 a 5 − 41 z 7 a 5 + 27 z 5 a 5 − 5 z 3 a 5 + 5 z 10 a 4 + 13 z 8 a 4 − 43 z 6 a 4 + 33 z 4 a 4 − 8 z 2 a 4 + a 4 + 11 z 9 a 3 − 7 z 7 a 3 − 11 z 5 a 3 + 7 z 3 a 3 + 14 z 8 a 2 − 19 z 6 a 2 + 5 z 4 a 2 + z 2 a 2 − a 2 + 11 z 7 a − 14 z 5 a + 3 z 3 a + 5 z 6 − 4 z 4 + z 5 a − 1 {\displaystyle z^{7}a^{11}-4z^{5}a^{11}+5z^{3}a^{11}-2za^{11}+3z^{8}a^{10}-11z^{6}a^{10}+13z^{4}a^{10}-6z^{2}a^{10}+a^{10}+4z^{9}a^{9}-10z^{7}a^{9}+4z^{5}a^{9}+3z^{3}a^{9}-za^{9}+3z^{10}a^{8}+z^{8}a^{8}-23z^{6}a^{8}+31z^{4}a^{8}-15z^{2}a^{8}+2a^{8}+z^{11}a^{7}+11z^{9}a^{7}-34z^{7}a^{7}+31z^{5}a^{7}-11z^{3}a^{7}+za^{7}+8z^{10}a^{6}-3z^{8}a^{6}-31z^{6}a^{6}+42z^{4}a^{6}-18z^{2}a^{6}+2a^{6}+z^{11}a^{5}+18z^{9}a^{5}-41z^{7}a^{5}+27z^{5}a^{5}-5z^{3}a^{5}+5z^{10}a^{4}+13z^{8}a^{4}-43z^{6}a^{4}+33z^{4}a^{4}-8z^{2}a^{4}+a^{4}+11z^{9}a^{3}-7z^{7}a^{3}-11z^{5}a^{3}+7z^{3}a^{3}+14z^{8}a^{2}-19z^{6}a^{2}+5z^{4}a^{2}+z^{2}a^{2}-a^{2}+11z^{7}a-14z^{5}a+3z^{3}a+5z^{6}-4z^{4}+z^{5}a^{-1}}
