is n't as easy to come by as it used to be 
(ROOT (S (VP (VBZ is) (RB n't) (ADJP (ADJP (RB as) (JJ easy) (SBAR (S (VP (TO to) (VP (VB come) (PP (IN by))))))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBD used) (S (VP (TO to) (VP (VB be)))))))))))
(ROOT (S (VP (VBZ ) (RB ) (ADJP (ADJP (RB ) (JJ ) (SBAR (S (VP (TO ) (VP (VB ) (PP (IN ))))))) (SBAR (IN ) (S (NP (PRP )) (VP (VBD ) (S (VP (TO ) (VP (VB )))))))))))