quickly writes himself into a corner 
(ROOT (S (ADVP (RB quickly)) (VP (VBZ writes) (NP (PRP himself)) (PP (IN into) (NP (DT a) (NN corner))))))
(ROOT (S (ADVP (RB )) (VP (VBZ ) (NP (PRP )) (PP (IN ) (NP (DT ) (NN ))))))