code: def find_keyboard_row(words):
      
      keyboard = [
          set('qwertyuiop'),
          set('asdfghjkl'),
          set('zxcvbnm'),
      ]
      result = []
      for word in words:
          for key in keyboard:
              if set(word.lower()).issubset(key):
                  result.append(word)
      return result
docs: :type words: List[str]
      :rtype: List[str]