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Across
  1. 3. – Like USD, GBP, INR, used in abbreviations.
  2. 4. – N, E, S, W—often clued as "direction" or "compass."
  3. 5. – Clues like DO, RE, MI—used as parts of answers.
Down
  1. 1. – AM, PM, HR, MIN, SEC—used in clue breakdowns.
  2. 2. – MON, TUE, etc., used cryptically.