( ( ( The ( ( most common ) form ) ) ( of diabetes ) ) ( ( is ( Type ( 2 ( diabetes mellitus ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (ADJP (RBS most) (JJ common)) (NN form)) (PP (IN of) (NP (NN diabetes)))) (VP (VBZ is) (VP (VBG Type) (NP (CD 2) (NN diabetes) (NNS mellitus)))) (. .)))
The most common form of diabetes is Type 2 diabetes mellitus.
(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))))) (. .)))