Related Clues:

• See 59-Down
• -- -tat-tat
• With 59-Across, a knock
• Pro --
• Pro ___ (proportionally)
• -- -tat
• Pro ___ (one way to divide things)
• Pro ___ (in proportion)
• See 128-Across
• Tat preceder
• Pro __
• Pro __ (proportionally)
• Madrid maze-runner
• Pro -- (proportionately)
• ___-tat (snare drum sound)