C312312111111331312111133133313331322331333133313121111331322232212311   >>    C31231211111133131211113313331333132233133313331312111133132223221231   <<    C312312111111331312111133133313331322331333133313121111331322232212313   >>      C312312111111331312111133133313331322331333133313121111331322232212312   >>