C3123121111113313121111331333133313311211113313331333132233132222131   >>    C312312111111331312111133133313331331121111331333133313223313222213   <<    C3123121111113313121111331333133313311211113313331333132233132222133   >>      C3123121111113313121111331333133313311211113313331333132233132222132   >>