C21221212121211331322132313132313231313232233132313223313311211111121111   >>    C2122121212121133132213231313231323131323223313231322331331121111112111   <<    C21221212121211331322132313132313231313232233132313223313311211111121113   >>      C21221212121211331322132313132313231313232233132313223313311211111121112   >>