C2122121212121133132213231313231333131323331323221323223313132313211   >>    C212212121212113313221323131323133313132333132322132322331313231321   <<    C2122121212121133132213231313231333131323331323221323223313132313213   >>      C2122121212121133132213231313231333131323331323221323223313132313212   >>