a 4 z 10 + a 2 z 10 + a 5 z 9 + 7 a 3 z 9 + 6 a z 9 + 5 a 4 z 8 + 14 a 2 z 8 + 9 z 8 + 3 a 5 z 7 − 8 a 3 z 7 − 6 a z 7 + 5 z 7 a − 1 + 3 a 6 z 6 − 11 a 4 z 6 − 37 a 2 z 6 + z 6 a − 2 − 22 z 6 − 2 a 5 z 5 − 3 a 3 z 5 − 11 a z 5 − 10 z 5 a − 1 + 5 a 6 z 4 + 13 a 4 z 4 + 20 a 2 z 4 − z 4 a − 2 + 11 z 4 + 5 a 7 z 3 + 6 a 5 z 3 + 2 a 3 z 3 + 4 a z 3 + 3 z 3 a − 1 − 5 a 6 z 2 − 5 a 4 z 2 + a 2 z 2 + z 2 − 3 a 7 z − 3 a 5 z + a 3 z + 2 a z + z a − 1 + a 6 − 3 a 2 − 1 {\displaystyle a^{4}z^{10}+a^{2}z^{10}+a^{5}z^{9}+7a^{3}z^{9}+6az^{9}+5a^{4}z^{8}+14a^{2}z^{8}+9z^{8}+3a^{5}z^{7}-8a^{3}z^{7}-6az^{7}+5z^{7}a^{-1}+3a^{6}z^{6}-11a^{4}z^{6}-37a^{2}z^{6}+z^{6}a^{-2}-22z^{6}-2a^{5}z^{5}-3a^{3}z^{5}-11az^{5}-10z^{5}a^{-1}+5a^{6}z^{4}+13a^{4}z^{4}+20a^{2}z^{4}-z^{4}a^{-2}+11z^{4}+5a^{7}z^{3}+6a^{5}z^{3}+2a^{3}z^{3}+4az^{3}+3z^{3}a^{-1}-5a^{6}z^{2}-5a^{4}z^{2}+a^{2}z^{2}+z^{2}-3a^{7}z-3a^{5}z+a^{3}z+2az+za^{-1}+a^{6}-3a^{2}-1}
