Related Clues:

• "I'm not sure"
• "Let me think . . ."
• "I'm thinking ..."
• 'Let me think, ....'
• "Hmm ..."
• 'Let's see ...'
• "That's curious . . ."
• A musing sound
• "That's curious ..."
• 'I'll think about that'
• 'Good question ...'
• 'Let me think about that'
• 'Let me see ...'
• Words that follow 'Hmmm...'
• "Wait, it'll come to me ..."