What Is Red ?

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Across
  1. 3. Basketball
  2. 4. Soulmate
  3. 6. Decorations
  4. 7. Signboard
  5. 8. Native Americans
  6. 9. Flower
Down
  1. 1. Displeased
  2. 2. Firework
  3. 5. Ashamed
  4. 7. Squirms