Related Clues:

• Get one's ducks in ---
• ''... and pretty maids all in ---''
• Three in ---
• In ___ (aligned)
• Queued up
• Rowed, as a stadium
• In ___ (consecutively)
• "... pretty maids all in ___"
• Like a wedding cake
• Three-in-___
• "Pretty maids all in ___"
• Like Carnegie Hall
• In layers
• Like a stadium
• In -- (queued up)