C111123313121111121111331333133313331333131233133313232233221333311   >>    C11112331312111112111133133313331333133313123313331323223322133331   <<    C111123313121111121111331333133313331333131233133313232233221333313   >>      C111123313121111121111331333133313331333131233133313232233221333312   >>