Related Clues:

• 'Interesting …'
• ''I'm thinking ...''
• ''Very interesting . . .''
• ''Let me think . . .''
• 'Let me think, ...'
• Mulling sound
• Words after "Hmmm..."
• "I wonder ..."
• Sound of deliberation
• 'I'll try to think of something ...'
• Muse emanation?
• Ponderer's phrase
• 'Let me see, ...'
• 'Good question'
• "Let me think about that"