C11112331312111112111133133313331333133311222121111113313331323311321211   >>    C1111233131211111211113313331333133313331122212111111331333132331132121   <<    C11112331312111112111133133313331333133311222121111113313331323311321213   >>      C11112331312111112111133133313331333133311222121111113313331323311321212   >>