q 22 + q 16 − 2 q 14 − q 12 − q 10 + 2 q 6 + 2 q 2 + q − 4 {\displaystyle q^{22}+q^{16}-2q^{14}-q^{12}-q^{10}+2q^{6}+2q^{2}+q^{-4}}