C312312111111331312111133133313331331121111331333133313232223311211   >>    C31231211111133131211113313331333133112111133133313331323222331121   <<    C312312111111331312111133133313331331121111331333133313232223311213   >>      C312312111111331312111133133313331331121111331333133313232223311212   >>