Related Clues:

• They rhyme with reason
• Biblical unit
• Haiku, for one
• Hallmark employee's output
• Metrical composition
• Pope's work
• Most numbers have two or more
• Feature of many a sympathy card
• Limerick, for one
• Chapter partner
• Guest work?
• Hallmark card text, often
• 59-Across, for one
• Pope piece
• Walks