C11112331312111112111133133313331333132323133313331333112121111331312311331   >>    C1111233131211111211113313331333133313232313331333133311212111133131231133   <<    C11112331312111112111133133313331333132323133313331333112121111331312311333   >>      C11112331312111112111133133313331333132323133313331333112121111331312311332   >>