comefrom: <doocs>0500.Keyboard Row_1.py
code: def findWords( words: List[str]) -> List[str]:
      s1 = set('qwertyuiop')
      s2 = set('asdfghjkl')
      s3 = set('zxcvbnm')
      res = []
      for word in words:
          t = set(word.lower())
          if t <= s1 or t <= s2 or t <= s3:
              res.append(word)
      return res
masked: def sample_funcname ( var_0 : List [ str ] ) -> List [ str ] :
      var_1 = set ( 'qwertyuiop' )
      var_2 = set ( 'asdfghjkl' )
      var_3 = set ( 'zxcvbnm' )
      var_4 = [ ]
      for var_5 in var_0 :
          var_6 = set ( var_5.lower ( ) )
          if var_6 <= var_1 or var_6 <= var_2 or var_6 <= var_3 :
              var_4.append ( var_5 )
      return var_4
  