Related Clues:

• They're 18 to 21
• Quartet after L
• B's tail?
• K to P string
• Letters after K
• I will follow it
• "The Alphabet Song" opening
• Letters after B
• Post-Q string
• The first 4 of 26
• Opening of a kid's song
• Multiple choice list
• Start of a nursery school ditty
• L-Q separators
• P-U linkup