Some bugs are hell to track down.
( ( Some bugs ) ( ( are ( hell ( to ( track down ) ) ) ) . ) )
(ROOT (S (NP (DT Some) (NNS bugs)) (VP (VBP are) (ADJP (JJ hell) (S (VP (TO to) (VP (VB track) (PRT (RP down))))))) (. .)))
Bugs are always easy to catch.
( Bugs ( ( ( are always ) ( easy ( to catch ) ) ) . ) )
(ROOT (S (NP (NNS Bugs)) (VP (VBP are) (ADVP (RB always)) (ADJP (JJ easy) (S (VP (TO to) (VP (VB catch)))))) (. .)))