C21221212121211331322132313132313231313232233132313223313132333132323111   >>    C2122121212121133132213231313231323131323223313231322331313233313232311   <<    C21221212121211331322132313132313231313232233132313223313132333132323113   >>      C21221212121211331322132313132313231313232233132313223313132333132323112   >>