C11112331312111112111133133313331333133313112113313331333133313232213331313311   >>    C1111233131211111211113313331333133313331311211331333133313331323221333131331   <<    C11112331312111112111133133313331333133313112113313331333133313232213331313313   >>      C11112331312111112111133133313331333133313112113313331333133313232213331313312   >>