C11112331312111112111133133313331333133313331333133313331333131121112113121   >>    C1111233131211111211113313331333133313331333133313331333133313112111211312   <<    C11112331312111112111133133313331333133313331333133313331333131121112113123   >>      C11112331312111112111133133313331333133313331333133313331333131121112113122   >>