it is worth searching out . 
(ROOT (S (NP (PRP it)) (VP (VBZ is) (ADJP (JJ worth) (S (VP (VBG searching) (PRT (RP out)))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (ADJP (JJ ) (S (VP (VBG ) (PRT (RP )))))) (. )))