C11112331312111112111133133313331333133311222121111121111132321133132322331211   >>    C1111233131211111211113313331333133313331122212111112111113232113313232233121   <<    C11112331312111112111133133313331333133311222121111121111132321133132322331213   >>      C11112331312111112111133133313331333133311222121111121111132321133132322331212   >>