C3123121111113313121111331333133313311211113313331333132233133313112123121   >>    C312312111111331312111133133313331331121111331333133313223313331311212312   <<    C3123121111113313121111331333133313311211113313331333132233133313112123123   >>      C3123121111113313121111331333133313311211113313331333132233133313112123122   >>