C11112331312111112111133133313331333133311222121111112113313331323221121   >>    C1111233131211111211113313331333133313331122212111111211331333132322112   <<    C11112331312111112111133133313331333133311222121111112113313331323221123   >>      C11112331312111112111133133313331333133311222121111112113313331323221122   >>