C312312111133131212111133133313231333132311331333133313232212311331   >>    C31231211113313121211113313331323133313231133133313331323221231133   <<    C312312111133131212111133133313231333132311331333133313232212311333   >>      C312312111133131212111133133313231333132311331333133313232212311332   >>