Punctual

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Across
  1. 1. one group sound
  2. 2. one
  3. 4. one side
  4. 5. one horn
  5. 6. one group
  6. 7. on time
  7. 9. one of a kind
  8. 10. one group
Down
  1. 1. one direction
  2. 3. one cell
  3. 4. one wheel
  4. 8. on piece leotard