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