Related Clues:

• B-F connectors
• They're right in front of U
• Letters on the 6
• B-F linkage
• B chasers?
• Q-U divider
• VW precursors?
• U lead-in
• They sneak up on U
• Letters below DEF
• B-F span
• Post-Q run
• UV indicator?
• They arrive before U
• Phone letters for 6