− v 2 u 6 + v u 6 + 3 v 2 u 5 − 4 v u 5 + u 5 − 5 v 2 u 4 + 9 v u 4 − 3 u 4 + 5 v 2 u 3 − 11 v u 3 + 5 u 3 − 3 v 2 u 2 + 9 v u 2 − 5 u 2 + v 2 u − 4 v u + 3 u + v − 1 {\displaystyle -v^{2}u^{6}+vu^{6}+3v^{2}u^{5}-4vu^{5}+u^{5}-5v^{2}u^{4}+9vu^{4}-3u^{4}+5v^{2}u^{3}-11vu^{3}+5u^{3}-3v^{2}u^{2}+9vu^{2}-5u^{2}+v^{2}u-4vu+3u+v-1}
