C11112331333132311331333133313331333112211231211113311233131133133313131111   >>    C1111233133313231133133313331333133311221123121111331123313113313331313111   <<    C11112331333132311331333133313331333112211231211113311233131133133313131113   >>      C11112331333132311331333133313331333112211231211113311233131133133313131112   >>