−v2u5 + vu5−v3u4 + 5v2u4−5vu4 + u4 + 3v3u3−12v2u3 + 12vu3−3u3−3v3u2 + 12v2u2−12vu2 + 3u2 + v3u−5v2u + 5vu−u + v2−v