Plural form of nouns ending in -f or -fe

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Across
  1. 1. thieves
  2. 4. wives
  3. 5. wharves
  4. 7. scarves
  5. 10. knives
  6. 11. leaves
  7. 12. loaves
  8. 13. selves
Down
  1. 2. halves
  2. 3. elves
  3. 5. Wolves
  4. 6. shelves
  5. 8. calves
  6. 9. lives