text: # https://py.checkio.org/mission/right-to-left
  
  """
    One of the robots is charged with a simple task: to join a sequence of strings into one sentence to produce instructions on how to get around the ship. 
    But this robot is left-handed and has a tendency to joke around and confuse its right-handed friends.
  
    You are given a sequence of strings. You should join these strings into a chunk of text where the initial strings are separated by commas. 
    As a joke on the right handed robots, you should replace all cases of the words "right" with the word "left", even if it's a part of another word. 
    All strings are given in lowercase.
  """
  
  def left_join(phrases: tuple) -> str:
      """
          Join strings and replace "right" to "left"
      """
      return  ','.join(phrases).replace("right", "left")
  
  if __name__ == '__main__':
      print('Example:')
      print(left_join(("left", "right", "left", "stop")))
      
      #These "asserts" using only for self-checking and not necessary for auto-testing
      assert left_join(("left", "right", "left", "stop")) == "left,left,left,stop", "All to left"
      assert left_join(("bright aright", "ok")) == "bleft aleft,ok", "Bright Left"
      assert left_join(("brightness wright",)) == "bleftness wleft", "One phrase"
      assert left_join(("enough", "jokes")) == "enough,jokes", "Nothing to replace"
      print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")
  