M 12 + L 5 M 6 + L ( − M 14 + 5 M 12 − 2 M 8 + 5 M 6 − 2 M 4 + M 2 − 1 ) + L 2 ( − M 16 + 3 M 12 + 3 M 10 + 3 M 8 + 3 M 6 + 4 M 4 − 6 M 2 + 1 ) + L 4 ( − M 18 + M 16 − 2 M 14 + 5 M 12 − 2 M 10 + 5 M 6 − M 4 ) + L 3 ( M 18 − 6 M 16 + 4 M 14 + 3 M 12 + 3 M 10 + 3 M 8 + 3 M 6 − M 2 ) {\displaystyle M^{12}+L^{5}M^{6}+L\left(-M^{14}+5M^{12}-2M^{8}+5M^{6}-2M^{4}+M^{2}-1\right)+L^{2}\left(-M^{16}+3M^{12}+3M^{10}+3M^{8}+3M^{6}+4M^{4}-6M^{2}+1\right)+L^{4}\left(-M^{18}+M^{16}-2M^{14}+5M^{12}-2M^{10}+5M^{6}-M^{4}\right)+L^{3}\left(M^{18}-6M^{16}+4M^{14}+3M^{12}+3M^{10}+3M^{8}+3M^{6}-M^{2}\right)}
