2 a 6 z 12 + 2 a 4 z 12 + 4 a 7 z 11 + 9 a 5 z 11 + 5 a 3 z 11 + 3 a 8 z 10 − 4 a 6 z 10 − a 4 z 10 + 6 a 2 z 10 + a 9 z 9 − 21 a 7 z 9 − 46 a 5 z 9 − 20 a 3 z 9 + 4 a z 9 − 17 a 8 z 8 − 16 a 6 z 8 − 28 a 4 z 8 − 28 a 2 z 8 + z 8 − 6 a 9 z 7 + 34 a 7 z 7 + 75 a 5 z 7 + 16 a 3 z 7 − 19 a z 7 + 31 a 8 z 6 + 39 a 6 z 6 + 50 a 4 z 6 + 38 a 2 z 6 − 4 z 6 + 12 a 9 z 5 − 22 a 7 z 5 − 61 a 5 z 5 + 27 a z 5 − 21 a 8 z 4 − 25 a 6 z 4 − 30 a 4 z 4 − 22 a 2 z 4 + 4 z 4 − 9 a 9 z 3 + 9 a 7 z 3 + 32 a 5 z 3 − a 3 z 3 − 15 a z 3 + 5 a 8 z 2 + 6 a 6 z 2 + 5 a 4 z 2 + 4 a 2 z 2 + 2 a 9 z − 3 a 7 z − 8 a 5 z − 2 a 3 z + 2 a z + z a − 1 − a 8 + 2 a 4 {\displaystyle 2a^{6}z^{12}+2a^{4}z^{12}+4a^{7}z^{11}+9a^{5}z^{11}+5a^{3}z^{11}+3a^{8}z^{10}-4a^{6}z^{10}-a^{4}z^{10}+6a^{2}z^{10}+a^{9}z^{9}-21a^{7}z^{9}-46a^{5}z^{9}-20a^{3}z^{9}+4az^{9}-17a^{8}z^{8}-16a^{6}z^{8}-28a^{4}z^{8}-28a^{2}z^{8}+z^{8}-6a^{9}z^{7}+34a^{7}z^{7}+75a^{5}z^{7}+16a^{3}z^{7}-19az^{7}+31a^{8}z^{6}+39a^{6}z^{6}+50a^{4}z^{6}+38a^{2}z^{6}-4z^{6}+12a^{9}z^{5}-22a^{7}z^{5}-61a^{5}z^{5}+27az^{5}-21a^{8}z^{4}-25a^{6}z^{4}-30a^{4}z^{4}-22a^{2}z^{4}+4z^{4}-9a^{9}z^{3}+9a^{7}z^{3}+32a^{5}z^{3}-a^{3}z^{3}-15az^{3}+5a^{8}z^{2}+6a^{6}z^{2}+5a^{4}z^{2}+4a^{2}z^{2}+2a^{9}z-3a^{7}z-8a^{5}z-2a^{3}z+2az+za^{-1}-a^{8}+2a^{4}}
