For your convenience, I am enclosing a copy of Form CC-40, which should be filed with your Indiana State Income Tax.
( ( For ( your convenience ) ) ( , ( I ( ( am ( enclosing ( ( a copy ) ( of ( ( ( Form CC-40 ) , ) ( which ( should ( be ( filed ( with ( your ( Indiana ( State ( Income Tax ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (PRP$ your) (NN convenience))) (, ,) (NP (PRP I)) (VP (VBP am) (VP (VBG enclosing) (NP (NP (DT a) (NN copy)) (PP (IN of) (NP (NP (NN Form) (NN CC-40)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (MD should) (VP (VB be) (VP (VBN filed) (PP (IN with) (NP (PRP$ your) (NNP Indiana) (NNP State) (NNP Income) (NNP Tax))))))))))))) (. .)))
To accommodate you, I have included a replica of Form CC-40, which you should include with your State Income Tax return for Indiana. 
( ( To ( accommodate you ) ) ( , ( I ( ( have ( included ( ( a replica ) ( of ( ( ( Form CC-40 ) , ) ( which ( you ( should ( ( include ( with ( your ( State ( Income ( Tax return ) ) ) ) ) ) ( for Indiana ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (TO To) (VP (VB accommodate) (NP (PRP you))))) (, ,) (NP (PRP I)) (VP (VBP have) (VP (VBN included) (NP (NP (DT a) (NN replica)) (PP (IN of) (NP (NP (NN Form) (NN CC-40)) (, ,) (SBAR (WHNP (WDT which)) (S (NP (PRP you)) (VP (MD should) (VP (VB include) (PP (IN with) (NP (PRP$ your) (NNP State) (NNP Income) (NNP Tax) (NN return))) (PP (IN for) (NP (NNP Indiana)))))))))))) (. .)))