z 7 a 11 − 3 z 5 a 11 + 3 z 3 a 11 − z a 11 + 4 z 8 a 10 − 11 z 6 a 10 + 11 z 4 a 10 − 5 z 2 a 10 + a 10 + 8 z 9 a 9 − 19 z 7 a 9 + 15 z 5 a 9 − 5 z 3 a 9 + z a 9 + 9 z 10 a 8 − 12 z 8 a 8 − 11 z 6 a 8 + 24 z 4 a 8 − 15 z 2 a 8 + 3 a 8 + 4 z 11 a 7 + 19 z 9 a 7 − 71 z 7 a 7 + 69 z 5 a 7 − 29 z 3 a 7 + 5 z a 7 + 25 z 10 a 6 − 41 z 8 a 6 − 11 z 6 a 6 + 41 z 4 a 6 − 23 z 2 a 6 + 4 a 6 + 4 z 11 a 5 + 37 z 9 a 5 − 107 z 7 a 5 + 88 z 5 a 5 − 30 z 3 a 5 + 5 z a 5 + 16 z 10 a 4 − 2 z 8 a 4 − 50 z 6 a 4 + 50 z 4 a 4 − 17 z 2 a 4 + 2 a 4 + 26 z 9 a 3 − 43 z 7 a 3 + 25 z 5 a 3 − 7 z 3 a 3 + 2 z a 3 + 23 z 8 a 2 − 34 z 6 a 2 + 20 z 4 a 2 − 4 z 2 a 2 − a 2 + 13 z 7 a − 11 z 5 a + 2 z 3 a + 5 z 6 − 2 z 4 + z 5 a − 1 {\displaystyle z^{7}a^{11}-3z^{5}a^{11}+3z^{3}a^{11}-za^{11}+4z^{8}a^{10}-11z^{6}a^{10}+11z^{4}a^{10}-5z^{2}a^{10}+a^{10}+8z^{9}a^{9}-19z^{7}a^{9}+15z^{5}a^{9}-5z^{3}a^{9}+za^{9}+9z^{10}a^{8}-12z^{8}a^{8}-11z^{6}a^{8}+24z^{4}a^{8}-15z^{2}a^{8}+3a^{8}+4z^{11}a^{7}+19z^{9}a^{7}-71z^{7}a^{7}+69z^{5}a^{7}-29z^{3}a^{7}+5za^{7}+25z^{10}a^{6}-41z^{8}a^{6}-11z^{6}a^{6}+41z^{4}a^{6}-23z^{2}a^{6}+4a^{6}+4z^{11}a^{5}+37z^{9}a^{5}-107z^{7}a^{5}+88z^{5}a^{5}-30z^{3}a^{5}+5za^{5}+16z^{10}a^{4}-2z^{8}a^{4}-50z^{6}a^{4}+50z^{4}a^{4}-17z^{2}a^{4}+2a^{4}+26z^{9}a^{3}-43z^{7}a^{3}+25z^{5}a^{3}-7z^{3}a^{3}+2za^{3}+23z^{8}a^{2}-34z^{6}a^{2}+20z^{4}a^{2}-4z^{2}a^{2}-a^{2}+13z^{7}a-11z^{5}a+2z^{3}a+5z^{6}-2z^{4}+z^{5}a^{-1}}
