− 3 v u 3 + 3 u 3 + 11 v u 2 − 11 u 2 − 11 v u + 11 u + 3 v − 3 {\displaystyle -3vu^{3}+3u^{3}+11vu^{2}-11u^{2}-11vu+11u+3v-3}
