The "f" sound spelled "ph"

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Across
  1. 1. Your A, B, Cs.
  2. 4. A bird hunted in "Danny the Champion of the World".
  3. 8. You use these in Maths.
  4. 9. Rugby is a -------- sport.
  5. 10. Something you can get at a museum.
Down
  1. 2. If you were lost, you would use this to call for help.
  2. 3. A circle in 3D.
  3. 5. Huge grey creatures with a long, hose-like nose.
  4. 6. Fish-like mammal with a hole in its head.
  5. 7. You make this with a phone or camera.