C11112331312111112111133133313331333133313112113313331311331333133313223121   >>    C1111233131211111211113313331333133313331311211331333131133133313331322312   <<    C11112331312111112111133133313331333133313112113313331311331333133313223123   >>      C11112331312111112111133133313331333133313112113313331311331333133313223122   >>