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Jun 6th, 2012
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  1. def find_words
  2. arr = []
  3. this = upcase.split ''
  4. for n in (1..length)
  5. this.permutation(n) do |w|
  6. w = w.join ''
  7. arr << w if WORDS.include? w
  8. end
  9. end
  10. return Set.new(arr)
  11. end
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