C312312111111331312111133133313331322331333133313121111331212131   >>    C31231211111133131211113313331333132233133313331312111133121213   <<    C312312111111331312111133133313331322331333133313121111331212133   >>      C312312111111331312111133133313331322331333133313121111331212132   >>