C3123121111113313121111331333133313311211111211113313331333133313232233131331   >>    C312312111111331312111133133313331331121111121111331333133313331323223313133   <<    C3123121111113313121111331333133313311211111211113313331333133313232233131333   >>      C3123121111113313121111331333133313311211111211113313331333133313232233131332   >>