succeed merrily at their noble endeavor 
(ROOT (S (VP (VB succeed) (ADVP (RB merrily)) (PP (IN at) (NP (PRP$ their) (JJ noble) (NN endeavor))))))
(ROOT (S (VP (VB ) (ADVP (RB )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN ))))))