C11112331312111112111133133313331333133311222121111113313331323311323321   >>    C1111233131211111211113313331333133313331122212111111331333132331132332   <<    C11112331312111112111133133313331333133311222121111113313331323311323323   >>      C11112331312111112111133133313331333133311222121111113313331323311323322   >>