C312312111133131212111133133313231333132311331333133313232133121   >>    C31231211113313121211113313331323133313231133133313331323213312   <<    C312312111133131212111133133313231333132311331333133313232133123   >>      C312312111133131212111133133313231333132311331333133313232133122   >>