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Across
  1. 2. – Commonly used clue element (e.g., V, L, M, D).
  2. 3. – Suggests repetition of letters (e.g., "b-b-bad").
  3. 5. – Vague cultural or historical allusions in a clue.
Down
  1. 1. – Element symbols as part of wordplay (e.g., AU, AG, O).
  2. 4. – Often used in abbreviations (e.g., PI, RHO, ETA).