Related Clues:

• They tie stories together
• Parts of a process
• Hitchcock's 39
• Rome's Spanish ___
• Alcoholics Anonymous has 12 of them
• Connecting flights
• 'The Thirty-Nine __'
• Connecting flight
• Increments
• They go from one story to another
• Household ladder, to Liverpudlians
• One way to the top
• Arthur Murray instruction
• Flight features
• Way up or way down