Possible Clues:

• Poetic patterns of line-endings
• Verses
• The ends of the lines are similar in sounds
• Limerick Times does it with crimes
• What Limerick does in hurling and curling sounds poetic
• Similar sounds at the ends of lines of poetry
• Wear and tear, e.g.
• What a cat does with a rat
• Pieces of poetry
• Shake and bake, e.g