C312312111133131212111133133313231333132311331333133313232223323231131   >>    C31231211113313121211113313331323133313231133133313331323222332323113   <<    C312312111133131212111133133313231333132311331333133313232223323231133   >>      C312312111133131212111133133313231333132311331333133313232223323231132   >>