C11112331312111112111133133313231333132313232233133313113223332311   >>    C1111233131211111211113313331323133313231323223313331311322333231   <<    C11112331312111112111133133313231333132313232233133313113223332313   >>      C11112331312111112111133133313231333132313232233133313113223332312   >>