text: from sympy import sieve
  
  
  def first_pass_anagrams(words):
  
      chars = list(sieve.primerange(4, 109))
  
      anagrams = {}
  
      for word in words:
          sig = "".join(sorted(word.lower()))
          if sig not in anagrams:
              anagrams[sig] = []
              anagrams[sig].append(word)
          if longest == None or len(anagrams[sig]) > len(anagrams[longest]):
              longest = sig
  