I knew him and liked and respected him.
( I ( ( ( ( knew him ) and ) ( ( ( liked and ) respected ) him ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VP (VBD knew) (NP (PRP him))) (CC and) (VP (VBD liked) (CC and) (VBD respected) (NP (PRP him)))) (. .)))
I had known him for many years.
( I ( ( had ( ( known him ) ( for ( many years ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD had) (VP (VBN known) (NP (PRP him)) (PP (IN for) (NP (JJ many) (NNS years))))) (. .)))