into one of the toughest ages a kid can go through 
(ROOT (PP (IN into) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (JJS toughest) (NNS ages)) (SBAR (S (NP (DT a) (NN kid)) (VP (MD can) (VP (VB go) (PP (IN through)))))))))))
(ROOT (PP (IN ) (NP (NP (CD )) (PP (IN ) (NP (NP (DT ) (JJS ) (NNS )) (SBAR (S (NP (DT ) (NN )) (VP (MD ) (VP (VB ) (PP (IN )))))))))))