C11112331333132311331333133313331333112211231211113313221333121   >>    C1111233133313231133133313331333133311221123121111331322133312   <<    C11112331333132311331333133313331333112211231211113313221333123   >>      C11112331333132311331333133313331333112211231211113313221333122   >>