enough charm and appealing character quirks to forgive that still serious problem 
(ROOT (NP (NP (NP (JJ enough) (NN charm)) (CC and) (NP (JJ appealing) (NN character) (NNS quirks))) (SBAR (S (VP (TO to) (VP (VB forgive) (NP (DT that) (ADJP (RB still) (JJ serious)) (NN problem))))))))
(ROOT (NP (NP (NP (JJ ) (NN )) (CC ) (NP (JJ ) (NN ) (NNS ))) (SBAR (S (VP (TO ) (VP (VB ) (NP (DT ) (ADJP (RB ) (JJ )) (NN ))))))))