C312312111133131212111133133313331333133112113313331333132323211231   >>    C31231211113313121211113313331333133313311211331333133313232321123   <<    C312312111133131212111133133313331333133112113313331333132323211233   >>      C312312111133131212111133133313331333133112113313331333132323211232   >>