Guess the Capital City of United States of America

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Across
  1. 4. I am capital of California, who am I?
  2. 5. I am capital of Vermont, who am I?
  3. 8. I am capital of Kansas, who am I?
  4. 10. I am capital of Washington, who am I?
Down
  1. 1. I am capital of Nevada, who am I?
  2. 2. I am capital of South Dakota, who am I?
  3. 3. I am capital of Oregon, who am I?
  4. 6. I am capital of Missouri, who am I?
  5. 7. I am capital of Minnesota, who am I?
  6. 9. I am capital of Alaska, who am I?