crisp and purposeful without overdoing it 
(ROOT (S (ADJP (JJ crisp) (CC and) (JJ purposeful)) (PP (IN without) (S (VP (VBG overdoing) (NP (PRP it)))))))
(ROOT (S (ADJP (JJ ) (CC ) (JJ )) (PP (IN ) (S (VP (VBG ) (NP (PRP )))))))