a 6 z 12 + a 4 z 12 + 4 a 7 z 11 + 10 a 5 z 11 + 6 a 3 z 11 + 7 a 8 z 10 + 23 a 6 z 10 + 31 a 4 z 10 + 15 a 2 z 10 + 7 a 9 z 9 + 19 a 7 z 9 + 29 a 5 z 9 + 36 a 3 z 9 + 19 a z 9 + 4 a 10 z 8 − 2 a 8 z 8 − 33 a 6 z 8 − 41 a 4 z 8 − a 2 z 8 + 13 z 8 + a 11 z 7 − 16 a 9 z 7 − 68 a 7 z 7 − 123 a 5 z 7 − 109 a 3 z 7 − 32 a z 7 + 5 z 7 a − 1 − 12 a 10 z 6 − 30 a 8 z 6 − 31 a 6 z 6 − 40 a 4 z 6 − 50 a 2 z 6 + z 6 a − 2 − 22 z 6 − 3 a 11 z 5 + 11 a 9 z 5 + 72 a 7 z 5 + 134 a 5 z 5 + 103 a 3 z 5 + 21 a z 5 − 6 z 5 a − 1 + 13 a 10 z 4 + 44 a 8 z 4 + 77 a 6 z 4 + 88 a 4 z 4 + 59 a 2 z 4 − z 4 a − 2 + 16 z 4 + 3 a 11 z 3 − 2 a 9 z 3 − 32 a 7 z 3 − 60 a 5 z 3 − 46 a 3 z 3 − 11 a z 3 + 2 z 3 a − 1 − 6 a 10 z 2 − 23 a 8 z 2 − 44 a 6 z 2 − 48 a 4 z 2 − 29 a 2 z 2 − 8 z 2 − a 11 z + 5 a 7 z + 10 a 5 z + 9 a 3 z + 3 a z + a 10 + 4 a 8 + 8 a 6 + 9 a 4 + 5 a 2 + 2 {\displaystyle a^{6}z^{12}+a^{4}z^{12}+4a^{7}z^{11}+10a^{5}z^{11}+6a^{3}z^{11}+7a^{8}z^{10}+23a^{6}z^{10}+31a^{4}z^{10}+15a^{2}z^{10}+7a^{9}z^{9}+19a^{7}z^{9}+29a^{5}z^{9}+36a^{3}z^{9}+19az^{9}+4a^{10}z^{8}-2a^{8}z^{8}-33a^{6}z^{8}-41a^{4}z^{8}-a^{2}z^{8}+13z^{8}+a^{11}z^{7}-16a^{9}z^{7}-68a^{7}z^{7}-123a^{5}z^{7}-109a^{3}z^{7}-32az^{7}+5z^{7}a^{-1}-12a^{10}z^{6}-30a^{8}z^{6}-31a^{6}z^{6}-40a^{4}z^{6}-50a^{2}z^{6}+z^{6}a^{-2}-22z^{6}-3a^{11}z^{5}+11a^{9}z^{5}+72a^{7}z^{5}+134a^{5}z^{5}+103a^{3}z^{5}+21az^{5}-6z^{5}a^{-1}+13a^{10}z^{4}+44a^{8}z^{4}+77a^{6}z^{4}+88a^{4}z^{4}+59a^{2}z^{4}-z^{4}a^{-2}+16z^{4}+3a^{11}z^{3}-2a^{9}z^{3}-32a^{7}z^{3}-60a^{5}z^{3}-46a^{3}z^{3}-11az^{3}+2z^{3}a^{-1}-6a^{10}z^{2}-23a^{8}z^{2}-44a^{6}z^{2}-48a^{4}z^{2}-29a^{2}z^{2}-8z^{2}-a^{11}z+5a^{7}z+10a^{5}z+9a^{3}z+3az+a^{10}+4a^{8}+8a^{6}+9a^{4}+5a^{2}+2}