C11112331333132311331333133313331333112211231211113313331333133313231333132231   >>    C1111233133313231133133313331333133311221123121111331333133313331323133313223   <<    C11112331333132311331333133313331333112211231211113313331333133313231333132233   >>      C11112331333132311331333133313331333112211231211113313331333133313231333132232   >>