C21221212121211331322132313132313231313232233132313223313113313123232311   >>    C2122121212121133132213231313231323131323223313231322331311331312323231   <<    C21221212121211331322132313132313231313232233132313223313113313123232313   >>      C21221212121211331322132313132313231313232233132313223313113313123232312   >>