2 a 4 z 10 + 2 a 2 z 10 + 4 a 5 z 9 + 9 a 3 z 9 + 5 a z 9 + 3 a 6 z 8 + a 4 z 8 + a 2 z 8 + 3 z 8 + a 7 z 7 − 12 a 5 z 7 − 31 a 3 z 7 − 18 a z 7 − 11 a 6 z 6 − 23 a 4 z 6 − 20 a 2 z 6 − 8 z 6 − 4 a 7 z 5 + 5 a 5 z 5 + 30 a 3 z 5 + 24 a z 5 + 3 z 5 a − 1 + 12 a 6 z 4 + 28 a 4 z 4 + 26 a 2 z 4 + 10 z 4 + 5 a 7 z 3 + 3 a 5 z 3 − 12 a 3 z 3 − 9 a z 3 + z 3 a − 1 − 6 a 6 z 2 − 15 a 4 z 2 − 12 a 2 z 2 + 3 z 2 a − 2 − 2 a 7 z − 2 a 5 z − 2 a z − 2 z a − 1 + 2 a 6 + 5 a 4 + 3 a 2 − a − 2 {\displaystyle 2a^{4}z^{10}+2a^{2}z^{10}+4a^{5}z^{9}+9a^{3}z^{9}+5az^{9}+3a^{6}z^{8}+a^{4}z^{8}+a^{2}z^{8}+3z^{8}+a^{7}z^{7}-12a^{5}z^{7}-31a^{3}z^{7}-18az^{7}-11a^{6}z^{6}-23a^{4}z^{6}-20a^{2}z^{6}-8z^{6}-4a^{7}z^{5}+5a^{5}z^{5}+30a^{3}z^{5}+24az^{5}+3z^{5}a^{-1}+12a^{6}z^{4}+28a^{4}z^{4}+26a^{2}z^{4}+10z^{4}+5a^{7}z^{3}+3a^{5}z^{3}-12a^{3}z^{3}-9az^{3}+z^{3}a^{-1}-6a^{6}z^{2}-15a^{4}z^{2}-12a^{2}z^{2}+3z^{2}a^{-2}-2a^{7}z-2a^{5}z-2az-2za^{-1}+2a^{6}+5a^{4}+3a^{2}-a^{-2}}
