−v2u5 + vu5−v3u4 + 4v2u4−4vu4 + u4 + 3v3u3−8v2u3 + 8vu3−3u3−3v3u2 + 8v2u2−8vu2 + 3u2 + v3u−4v2u + 4vu−u + v2−v