puts the dutiful efforts of more disciplined grade-grubbers 
(ROOT (S (VP (VBZ puts) (NP (NP (DT the) (JJ dutiful) (NNS efforts)) (PP (IN of) (NP (ADJP (RBR more) (VBN disciplined)) (NN grade) (HYPH -) (NNS grubbers)))))))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (JJ ) (NNS )) (PP (IN ) (NP (ADJP (RBR ) (VBN )) (NN ) (HYPH ) (NNS )))))))