C11112331312111112111133133313331333132322121111331123313113223331   >>    C1111233131211111211113313331333133313232212111133112331311322333   <<    C11112331312111112111133133313331333132322121111331123313113223333   >>      C11112331312111112111133133313331333132322121111331123313113223332   >>