( ( ( Two types ) ( of diabetes ) ) ( ( are common ) . ) )
(ROOT (S (NP (NP (CD Two) (NNS types)) (PP (IN of) (NP (NN diabetes)))) (VP (VBP are) (ADJP (JJ common))) (. .)))
Two types of diabetes are common.
(ROOT (S (NP (NNP Type) (CD 2)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBR more) (JJ common)) (NN type)) (PP (IN of) (NP (NN diabetes))))) (. .)))