C312312111111331312111133133313231333133313121211113313232233132323311   >>    C31231211111133131211113313331323133313331312121111331323223313232331   <<    C312312111111331312111133133313231333133313121211113313232233132323313   >>      C312312111111331312111133133313231333133313121211113313232233132323312   >>