C11112331312111112111133133313331333133311222121111113313232211312331   >>    C1111233131211111211113313331333133313331122212111111331323221131233   <<    C11112331312111112111133133313331333133311222121111113313232211312333   >>      C11112331312111112111133133313331333133311222121111113313232211312332   >>