C11112331312111112111133133313331333133311222121111113313331323222321332121121   >>    C1111233131211111211113313331333133313331122212111111331333132322232133212112   <<    C11112331312111112111133133313331333133311222121111113313331323222321332121123   >>      C11112331312111112111133133313331333133311222121111113313331323222321332121122   >>