Do you think I should be concerned?
( ( ( Do you ) ( think ( I ( should ( be concerned ) ) ) ) ) ? )
(ROOT (SQ (VBP Do) (NP (PRP you)) (VP (VB think) (SBAR (S (NP (PRP I)) (VP (MD should) (VP (VB be) (ADJP (JJ concerned))))))) (. ?)))
Do you think I should be confident?
( ( ( Do you ) ( think ( I ( should ( be confident ) ) ) ) ) ? )
(ROOT (SQ (VBP Do) (NP (PRP you)) (VP (VB think) (SBAR (S (NP (PRP I)) (VP (MD should) (VP (VB be) (ADJP (JJ confident))))))) (. ?)))