t 8 q 21 + 4 t 7 q 19 + t 7 q 17 + 8 t 6 q 17 + 4 t 6 q 15 + 14 t 5 q 15 + 8 t 5 q 13 + 17 t 4 q 13 + 14 t 4 q 11 + 20 t 3 q 11 + 17 t 3 q 9 + 20 t 2 q 9 + 20 t 2 q 7 + 16 t q 7 + 20 t q 5 + 13 q 5 + 8 q 3 t − 1 + 17 q 3 + 12 q t − 1 + 3 q t − 2 + 8 q − 1 t − 2 + q − 1 t − 3 + 3 q − 3 t − 3 + q − 5 t − 4 {\displaystyle t^{8}q^{21}+4t^{7}q^{19}+t^{7}q^{17}+8t^{6}q^{17}+4t^{6}q^{15}+14t^{5}q^{15}+8t^{5}q^{13}+17t^{4}q^{13}+14t^{4}q^{11}+20t^{3}q^{11}+17t^{3}q^{9}+20t^{2}q^{9}+20t^{2}q^{7}+16tq^{7}+20tq^{5}+13q^{5}+8q^{3}t^{-1}+17q^{3}+12qt^{-1}+3qt^{-2}+8q^{-1}t^{-2}+q^{-1}t^{-3}+3q^{-3}t^{-3}+q^{-5}t^{-4}}
