C3123121111113313121111331333133313311211113323213331323221233121   >>    C312312111111331312111133133313331331121111332321333132322123312   <<    C3123121111113313121111331333133313311211113323213331323221233123   >>      C3123121111113313121111331333133313311211113323213331323221233122   >>