Related Clues:

• Three after B
• Q queue
• Pre-V formation
• U leaders?
• B-F linkup
• Run before V
• Post-Q queue
• B train?
• They keep 'Q' from 'U'
• V lead-in
• 18-20 in a sequence
• Q-U connection
• 18 through 20, in a run
• They're ahead of U
• Pre-U trio