List 59 'gh' & 'ph' as 'f'

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Across
  1. 5. A group of two letters that make one sound
  2. 6. The desire to promote welfare through money
  3. 11. A ghost or figment of your imagination
  4. 13. A round solid figure
  5. 16. Expressing a strong reaction of relief
  6. 17. A branch of science that talks about atoms
  7. 18. A great victory
  8. 21. A fluid containing white blood cells
  9. 24. A way to style and organize an essay
Down
  1. 1. A group of three letters that make a sound
  2. 2. A monster in Greek mythology
  3. 3. A cold-blooded vertebrate animal
  4. 4. A small type of flower
  5. 7. A large bird native to Asia
  6. 8. A animal native to Asia & Africa
  7. 9. A distinct stage or series of events
  8. 10. A small group of words that mean something
  9. 12. Change from one to another by gradual steps
  10. 14. A special importance of something
  11. 15. Something that you can feel
  12. 19. A salt or type of acid
  13. 20. A written material
  14. 22. A set of letters from A-Z
  15. 23. A small bug which eats sap from plants