greek alphabet

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Across
  1. 3. si
  2. 5. round and end with an ga
  3. 7. k
  4. 10. u
  5. 14. straw letter
  6. 15. number
  7. 17. begins with and I
  8. 20. long name
  9. 21. has lam is it
Down
  1. 1. number
  2. 2. a p
  3. 4. line and worm
  4. 6. round circle with a line
  5. 8. 1st greek alphabet
  6. 9. end with hi
  7. 11. 7
  8. 12. z
  9. 13. 2 letters in its name
  10. 16. an x
  11. 18. triangle
  12. 19. his letter is close to alpha
  13. 22. 2 letters in name