, at last count , numbered 52 different versions 
(ROOT (S (, ,) (PP (IN at) (NP (JJ last) (NN count))) (, ,) (VP (VBD numbered) (NP (CD 52) (JJ different) (NNS versions)))))
(ROOT (S (, ) (PP (IN ) (NP (JJ ) (NN ))) (, ) (VP (VBD ) (NP (CD ) (JJ ) (NNS )))))