− v 3 u 3 + 4 v 2 u 3 − 5 v u 3 + 2 u 3 + 3 v 3 u 2 − 13 v 2 u 2 + 14 v u 2 − 4 u 2 − 4 v 3 u + 14 v 2 u − 13 v u + 3 u + 2 v 3 − 5 v 2 + 4 v − 1 {\displaystyle -v^{3}u^{3}+4v^{2}u^{3}-5vu^{3}+2u^{3}+3v^{3}u^{2}-13v^{2}u^{2}+14vu^{2}-4u^{2}-4v^{3}u+14v^{2}u-13vu+3u+2v^{3}-5v^{2}+4v-1}
