HELIOS SET

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Across
  1. 1. VIS
  2. 2. DE-
  3. 7. CO-/COM-
  4. 9. INTER-
Down
  1. 1. PHONO
  2. 3. CON
  3. 4. TELE-
  4. 5. NON-
  5. 6. EXTRA-
  6. 8. SPHERE