C11112331312111112111133133313331333133311222121111113313331322211111   >>    C1111233131211111211113313331333133313331122212111111331333132221111   <<    C11112331312111112111133133313331333133311222121111113313331322211113   >>      C11112331312111112111133133313331333133311222121111113313331322211112   >>