Oo

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Across
  1. 1. oboe
  2. 3. old
  3. 4. orange
  4. 5. obstacle
  5. 7. office
  6. 8. oxen
Down
  1. 1. olive
  2. 2. owl
  3. 3. octopus
  4. 4. octagon
  5. 6. ocean