itself virtually collapses into an inhalant blackout , maintaining consciousness just long enough to achieve callow pretension 
(ROOT (S (NP (PRP itself)) (ADVP (RB virtually)) (VP (VBZ collapses) (PP (IN into) (NP (DT an) (JJ inhalant) (NN blackout))) (, ,) (S (VP (VBG maintaining) (NP (NN consciousness)) (ADVP (RB just) (RB long) (RB enough) (S (VP (TO to) (VP (VB achieve) (NP (JJ callow) (NN pretension)))))))))))
(ROOT (S (NP (PRP )) (ADVP (RB )) (VP (VBZ ) (PP (IN ) (NP (DT ) (JJ ) (NN ))) (, ) (S (VP (VBG ) (NP (NN )) (ADVP (RB ) (RB ) (RB ) (S (VP (TO ) (VP (VB ) (NP (JJ ) (NN )))))))))))