q 9 − q 8 + 6 q 7 − 5 q 6 + 11 q 5 − 5 q 4 + 10 q 3 − 5 q 2 + 4 q {\displaystyle q^{9}-q^{8}+6q^{7}-5q^{6}+11q^{5}-5q^{4}+10q^{3}-5q^{2}+4q}
