C11112331333132311331333133313331333112211231211113311233131133133321   >>    C1111233133313231133133313331333133311221123121111331123313113313332   <<    C11112331333132311331333133313331333112211231211113311233131133133323   >>      C11112331333132311331333133313331333112211231211113311233131133133322   >>