as pedestrian as they come . 
(ROOT (ADJP (ADJP (RB as) (JJ pedestrian)) (SBAR (IN as) (S (NP (PRP they)) (VP (VBP come)))) (. .)))
(ROOT (ADJP (ADJP (RB ) (JJ )) (SBAR (IN ) (S (NP (PRP )) (VP (VBP )))) (. )))