comefrom: <doocs>0893.Groups of Special-Equivalent Strings_1.py
code: def numSpecialEquivGroups( words: List[str]) -> int:
      s = {''.join(sorted(word[::2]) + sorted(word[1::2])) for word in words}
      return len(s)
masked: def sample_funcname ( var_0 : List [ str ] ) -> int :
      var_10 = { ''.join ( sorted ( var_7 [ : : 2 ] ) + sorted ( var_7 [ 1 : : 2 ] ) ) for var_7 in var_0 }
      return len ( var_10 )
  