living far too much in its own head 
(ROOT (S (VP (VBG living) (ADVP (ADVP (RB far) (RB too) (RB much)) (PP (IN in) (NP (PRP$ its) (JJ own) (NN head)))))))
(ROOT (S (VP (VBG ) (ADVP (ADVP (RB ) (RB ) (RB )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN )))))))