a 6 z 10 + a 4 z 10 + 2 a 7 z 9 + 7 a 5 z 9 + 5 a 3 z 9 + a 8 z 8 + 6 a 6 z 8 + 14 a 4 z 8 + 9 a 2 z 8 − a 7 z 7 − 7 a 5 z 7 + 2 a 3 z 7 + 8 a z 7 + 2 a 8 z 6 − 15 a 6 z 6 − 36 a 4 z 6 − 15 a 2 z 6 + 4 z 6 + 3 a 9 z 5 + 2 a 7 z 5 − 5 a 5 z 5 − 18 a 3 z 5 − 13 a z 5 + z 5 a − 1 − 6 a 8 z 4 + 17 a 6 z 4 + 38 a 4 z 4 + 10 a 2 z 4 − 5 z 4 − 7 a 9 z 3 − 6 a 7 z 3 + 11 a 5 z 3 + 17 a 3 z 3 + 6 a z 3 − z 3 a − 1 + 2 a 8 z 2 − 13 a 6 z 2 − 22 a 4 z 2 − 6 a 2 z 2 + z 2 + 4 a 9 z + 2 a 7 z − 5 a 5 z − 5 a 3 z − 2 a z + 4 a 6 + 7 a 4 + 2 a 2 {\displaystyle a^{6}z^{10}+a^{4}z^{10}+2a^{7}z^{9}+7a^{5}z^{9}+5a^{3}z^{9}+a^{8}z^{8}+6a^{6}z^{8}+14a^{4}z^{8}+9a^{2}z^{8}-a^{7}z^{7}-7a^{5}z^{7}+2a^{3}z^{7}+8az^{7}+2a^{8}z^{6}-15a^{6}z^{6}-36a^{4}z^{6}-15a^{2}z^{6}+4z^{6}+3a^{9}z^{5}+2a^{7}z^{5}-5a^{5}z^{5}-18a^{3}z^{5}-13az^{5}+z^{5}a^{-1}-6a^{8}z^{4}+17a^{6}z^{4}+38a^{4}z^{4}+10a^{2}z^{4}-5z^{4}-7a^{9}z^{3}-6a^{7}z^{3}+11a^{5}z^{3}+17a^{3}z^{3}+6az^{3}-z^{3}a^{-1}+2a^{8}z^{2}-13a^{6}z^{2}-22a^{4}z^{2}-6a^{2}z^{2}+z^{2}+4a^{9}z+2a^{7}z-5a^{5}z-5a^{3}z-2az+4a^{6}+7a^{4}+2a^{2}}
