C11112331312111112111133133313331333133313123313331311331323232133313232223231   >>    C1111233131211111211113313331333133313331312331333131133132323213331323222323   <<    C11112331312111112111133133313331333133313123313331311331323232133313232223233   >>      C11112331312111112111133133313331333133313123313331311331323232133313232223232   >>