( There ( ( are ( ( three ( common types ) ) ( of diabetes ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD three) (JJ common) (NNS types)) (PP (IN of) (NP (NN diabetes))))) (. .)))
There are three common types of diabetes.
(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))))) (. .)))