we had no trouble sitting for blade ii . 
(ROOT (S (NP (PRP we)) (VP (VBD had) (NP (DT no) (NN trouble)) (S (VP (VBG sitting) (PP (IN for) (NP (NN blade) (CD ii)))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBD ) (NP (DT ) (NN )) (S (VP (VBG ) (PP (IN ) (NP (NN ) (CD )))))) (. )))