C21221212121211331322132313132313231313232233132313223313231333133313232222331   >>    C2122121212121133132213231313231323131323223313231322331323133313331323222233   <<    C21221212121211331322132313132313231313232233132313223313231333133313232222333   >>      C21221212121211331322132313132313231313232233132313223313231333133313232222332   >>